drivers: net: convert makefiles to Kbuild style

Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
diff --git a/drivers/net/fm/Makefile b/drivers/net/fm/Makefile
index dddde4f..bec86c1 100644
--- a/drivers/net/fm/Makefile
+++ b/drivers/net/fm/Makefile
@@ -4,51 +4,30 @@
 # SPDX-License-Identifier:	GPL-2.0+
 #
 
-include $(TOPDIR)/config.mk
-
-LIB	:= $(obj)libfm.o
-
 ifdef CONFIG_FMAN_ENET
-COBJS-y += dtsec.o
-COBJS-y += eth.o
-COBJS-y += fm.o
-COBJS-y += init.o
-COBJS-y += tgec.o
-COBJS-y += tgec_phy.o
+obj-y += dtsec.o
+obj-y += eth.o
+obj-y += fm.o
+obj-y += init.o
+obj-y += tgec.o
+obj-y += tgec_phy.o
 
 # Soc have FMAN v3 with mEMAC
-COBJS-$(CONFIG_SYS_FMAN_V3) += memac_phy.o
-COBJS-$(CONFIG_SYS_FMAN_V3) += memac.o
+obj-$(CONFIG_SYS_FMAN_V3) += memac_phy.o
+obj-$(CONFIG_SYS_FMAN_V3) += memac.o
 
 # SoC specific SERDES support
-COBJS-$(CONFIG_P1017)	+= p1023.o
-COBJS-$(CONFIG_P1023)	+= p1023.o
+obj-$(CONFIG_P1017)	+= p1023.o
+obj-$(CONFIG_P1023)	+= p1023.o
 # The P204x, P304x, and P5020 are the same
-COBJS-$(CONFIG_PPC_P2041) += p5020.o
-COBJS-$(CONFIG_PPC_P3041) += p5020.o
-COBJS-$(CONFIG_PPC_P4080) += p4080.o
-COBJS-$(CONFIG_PPC_P5020) += p5020.o
-COBJS-$(CONFIG_PPC_P5040) += p5040.o
-COBJS-$(CONFIG_PPC_T1040) += t1040.o
-COBJS-$(CONFIG_PPC_T4240) += t4240.o
-COBJS-$(CONFIG_PPC_T4160) += t4240.o
-COBJS-$(CONFIG_PPC_B4420) += b4860.o
-COBJS-$(CONFIG_PPC_B4860) += b4860.o
+obj-$(CONFIG_PPC_P2041) += p5020.o
+obj-$(CONFIG_PPC_P3041) += p5020.o
+obj-$(CONFIG_PPC_P4080) += p4080.o
+obj-$(CONFIG_PPC_P5020) += p5020.o
+obj-$(CONFIG_PPC_P5040) += p5040.o
+obj-$(CONFIG_PPC_T1040) += t1040.o
+obj-$(CONFIG_PPC_T4240) += t4240.o
+obj-$(CONFIG_PPC_T4160) += t4240.o
+obj-$(CONFIG_PPC_B4420) += b4860.o
+obj-$(CONFIG_PPC_B4860) += b4860.o
 endif
-
-COBJS	:= $(COBJS-y)
-SRCS	:= $(COBJS:.o=.c)
-OBJS	:= $(addprefix $(obj),$(COBJS))
-
-all:	$(LIB)
-
-$(LIB):	$(obj).depend $(OBJS)
-	$(call cmd_link_o_target, $(OBJS))
-
-#########################################################################
-
-include $(SRCTREE)/rules.mk
-
-sinclude $(obj).depend
-
-#########################################################################