drivers: convert makefiles to Kbuild style

Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
diff --git a/drivers/power/Makefile b/drivers/power/Makefile
index b2812dc..53ff97d 100644
--- a/drivers/power/Makefile
+++ b/drivers/power/Makefile
@@ -5,38 +5,15 @@
 # SPDX-License-Identifier:	GPL-2.0+
 #
 
-include $(TOPDIR)/config.mk
-
-LIB	:= $(obj)libpower.o
-
-COBJS-$(CONFIG_EXYNOS_TMU)	+= exynos-tmu.o
-COBJS-$(CONFIG_FTPMU010_POWER)	+= ftpmu010.o
-COBJS-$(CONFIG_TPS6586X_POWER)	+= tps6586x.o
-COBJS-$(CONFIG_TWL4030_POWER)	+= twl4030.o
-COBJS-$(CONFIG_TWL6030_POWER)	+= twl6030.o
-COBJS-$(CONFIG_PALMAS_POWER)	+= palmas.o
-
-COBJS-$(CONFIG_POWER) += power_core.o
-COBJS-$(CONFIG_DIALOG_POWER) += power_dialog.o
-COBJS-$(CONFIG_POWER_FSL) += power_fsl.o
-COBJS-$(CONFIG_POWER_I2C) += power_i2c.o
-COBJS-$(CONFIG_POWER_SPI) += power_spi.o
-
-COBJS	:= $(COBJS-y)
-SRCS	:= $(COBJS:.o=.c)
-OBJS	:= $(addprefix $(obj),$(COBJS))
-
-all:	$(LIB)
-
-$(LIB):	$(obj).depend $(OBJS)
-	$(call cmd_link_o_target, $(OBJS))
-
-
-#########################################################################
-
-# defines $(obj).depend target
-include $(SRCTREE)/rules.mk
-
-sinclude $(obj).depend
+obj-$(CONFIG_EXYNOS_TMU)	+= exynos-tmu.o
+obj-$(CONFIG_FTPMU010_POWER)	+= ftpmu010.o
+obj-$(CONFIG_TPS6586X_POWER)	+= tps6586x.o
+obj-$(CONFIG_TWL4030_POWER)	+= twl4030.o
+obj-$(CONFIG_TWL6030_POWER)	+= twl6030.o
+obj-$(CONFIG_PALMAS_POWER)	+= palmas.o
 
-########################################################################
+obj-$(CONFIG_POWER) += power_core.o
+obj-$(CONFIG_DIALOG_POWER) += power_dialog.o
+obj-$(CONFIG_POWER_FSL) += power_fsl.o
+obj-$(CONFIG_POWER_I2C) += power_i2c.o
+obj-$(CONFIG_POWER_SPI) += power_spi.o
diff --git a/drivers/power/battery/Makefile b/drivers/power/battery/Makefile
index 4bf315d..f864f04 100644
--- a/drivers/power/battery/Makefile
+++ b/drivers/power/battery/Makefile
@@ -5,28 +5,5 @@
 # SPDX-License-Identifier:	GPL-2.0+
 #
 
-include $(TOPDIR)/config.mk
-
-LIB	:= $(obj)libbattery.o
-
-COBJS-$(CONFIG_POWER_BATTERY_TRATS) += bat_trats.o
-COBJS-$(CONFIG_POWER_BATTERY_TRATS2) += bat_trats2.o
-
-COBJS	:= $(COBJS-y)
-SRCS	:= $(COBJS:.o=.c)
-OBJS	:= $(addprefix $(obj),$(COBJS))
-
-all:	$(LIB)
-
-$(LIB):	$(obj).depend $(OBJS)
-	$(call cmd_link_o_target, $(OBJS))
-
-
-#########################################################################
-
-# defines $(obj).depend target
-include $(SRCTREE)/rules.mk
-
-sinclude $(obj).depend
-
-########################################################################
+obj-$(CONFIG_POWER_BATTERY_TRATS) += bat_trats.o
+obj-$(CONFIG_POWER_BATTERY_TRATS2) += bat_trats2.o
diff --git a/drivers/power/fuel_gauge/Makefile b/drivers/power/fuel_gauge/Makefile
index 5166a30..3b349f9 100644
--- a/drivers/power/fuel_gauge/Makefile
+++ b/drivers/power/fuel_gauge/Makefile
@@ -5,27 +5,4 @@
 # SPDX-License-Identifier:	GPL-2.0+
 #
 
-include $(TOPDIR)/config.mk
-
-LIB	:= $(obj)libfuel_gauge.o
-
-COBJS-$(CONFIG_POWER_FG_MAX17042) += fg_max17042.o
-
-COBJS	:= $(COBJS-y)
-SRCS	:= $(COBJS:.o=.c)
-OBJS	:= $(addprefix $(obj),$(COBJS))
-
-all:	$(LIB)
-
-$(LIB):	$(obj).depend $(OBJS)
-	$(call cmd_link_o_target, $(OBJS))
-
-
-#########################################################################
-
-# defines $(obj).depend target
-include $(SRCTREE)/rules.mk
-
-sinclude $(obj).depend
-
-########################################################################
+obj-$(CONFIG_POWER_FG_MAX17042) += fg_max17042.o
diff --git a/drivers/power/mfd/Makefile b/drivers/power/mfd/Makefile
index 76a05da..43afe84 100644
--- a/drivers/power/mfd/Makefile
+++ b/drivers/power/mfd/Makefile
@@ -5,29 +5,6 @@
 # SPDX-License-Identifier:	GPL-2.0+
 #
 
-include $(TOPDIR)/config.mk
-
-LIB	:= $(obj)libmfd.o
-
-COBJS-$(CONFIG_POWER_PMIC_MAX77693) += pmic_max77693.o
-COBJS-$(CONFIG_POWER_MUIC_MAX77693) += muic_max77693.o
-COBJS-$(CONFIG_POWER_FG_MAX77693) += fg_max77693.o
-
-COBJS	:= $(COBJS-y)
-SRCS	:= $(COBJS:.o=.c)
-OBJS	:= $(addprefix $(obj),$(COBJS))
-
-all:	$(LIB)
-
-$(LIB):	$(obj).depend $(OBJS)
-	$(call cmd_link_o_target, $(OBJS))
-
-
-#########################################################################
-
-# defines $(obj).depend target
-include $(SRCTREE)/rules.mk
-
-sinclude $(obj).depend
-
-########################################################################
+obj-$(CONFIG_POWER_PMIC_MAX77693) += pmic_max77693.o
+obj-$(CONFIG_POWER_MUIC_MAX77693) += muic_max77693.o
+obj-$(CONFIG_POWER_FG_MAX77693) += fg_max77693.o
diff --git a/drivers/power/pmic/Makefile b/drivers/power/pmic/Makefile
index 11b3d03..0b45ffa 100644
--- a/drivers/power/pmic/Makefile
+++ b/drivers/power/pmic/Makefile
@@ -5,32 +5,9 @@
 # SPDX-License-Identifier:	GPL-2.0+
 #
 
-include $(TOPDIR)/config.mk
-
-LIB	:= $(obj)libpmic.o
-
-COBJS-$(CONFIG_POWER_MAX8998) += pmic_max8998.o
-COBJS-$(CONFIG_POWER_MAX8997) += pmic_max8997.o
-COBJS-$(CONFIG_POWER_MUIC_MAX8997) += muic_max8997.o
-COBJS-$(CONFIG_POWER_MAX77686) += pmic_max77686.o
-COBJS-$(CONFIG_POWER_TPS65217) += pmic_tps65217.o
-COBJS-$(CONFIG_POWER_TPS65910) += pmic_tps65910.o
-
-COBJS	:= $(COBJS-y)
-SRCS	:= $(COBJS:.o=.c)
-OBJS	:= $(addprefix $(obj),$(COBJS))
-
-all:	$(LIB)
-
-$(LIB):	$(obj).depend $(OBJS)
-	$(call cmd_link_o_target, $(OBJS))
-
-
-#########################################################################
-
-# defines $(obj).depend target
-include $(SRCTREE)/rules.mk
-
-sinclude $(obj).depend
-
-########################################################################
+obj-$(CONFIG_POWER_MAX8998) += pmic_max8998.o
+obj-$(CONFIG_POWER_MAX8997) += pmic_max8997.o
+obj-$(CONFIG_POWER_MUIC_MAX8997) += muic_max8997.o
+obj-$(CONFIG_POWER_MAX77686) += pmic_max77686.o
+obj-$(CONFIG_POWER_TPS65217) += pmic_tps65217.o
+obj-$(CONFIG_POWER_TPS65910) += pmic_tps65910.o