drivers: usb: convert makefiles to Kbuild style
Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
diff --git a/drivers/usb/phy/Makefile b/drivers/usb/phy/Makefile
index 5beec78..93d147e 100644
--- a/drivers/usb/phy/Makefile
+++ b/drivers/usb/phy/Makefile
@@ -5,27 +5,5 @@
# SPDX-License-Identifier: GPL-2.0+
#
-include $(TOPDIR)/config.mk
-
-LIB := $(obj)libusb_phy.o
-
-COBJS-$(CONFIG_TWL4030_USB) += twl4030.o
-COBJS-$(CONFIG_OMAP_USB_PHY) += omap_usb_phy.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_TWL4030_USB) += twl4030.o
+obj-$(CONFIG_OMAP_USB_PHY) += omap_usb_phy.o