drivers: usb: convert makefiles to Kbuild style

Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
diff --git a/drivers/usb/musb-new/Makefile b/drivers/usb/musb-new/Makefile
index 626af3e..ba72348 100644
--- a/drivers/usb/musb-new/Makefile
+++ b/drivers/usb/musb-new/Makefile
@@ -2,37 +2,14 @@
 # for USB OTG silicon based on Mentor Graphics INVENTRA designs
 #
 
-include $(TOPDIR)/config.mk
-
-LIB	:= $(obj)libusb_musb-new.o
-
-COBJS-$(CONFIG_MUSB_GADGET) += musb_gadget.o musb_gadget_ep0.o musb_core.o
-COBJS-$(CONFIG_MUSB_GADGET) += musb_uboot.o
-COBJS-$(CONFIG_MUSB_HOST) += musb_host.o musb_core.o musb_uboot.o
-COBJS-$(CONFIG_USB_MUSB_DSPS) += musb_dsps.o
-COBJS-$(CONFIG_USB_MUSB_AM35X) += am35x.o
-COBJS-$(CONFIG_USB_MUSB_OMAP2PLUS) += omap2430.o
+obj-$(CONFIG_MUSB_GADGET) += musb_gadget.o musb_gadget_ep0.o musb_core.o
+obj-$(CONFIG_MUSB_GADGET) += musb_uboot.o
+obj-$(CONFIG_MUSB_HOST) += musb_host.o musb_core.o musb_uboot.o
+obj-$(CONFIG_USB_MUSB_DSPS) += musb_dsps.o
+obj-$(CONFIG_USB_MUSB_AM35X) += am35x.o
+obj-$(CONFIG_USB_MUSB_OMAP2PLUS) += omap2430.o
 
 CFLAGS_NO_WARN := $(call cc-option,-Wno-unused-variable) \
 			$(call cc-option,-Wno-unused-but-set-variable) \
 			$(call cc-option,-Wno-unused-label)
 CFLAGS += $(CFLAGS_NO_WARN)
-
-COBJS	:= $(sort $(COBJS-y))
-SRCS	:= $(COBJS:.o=.c)
-OBJS	:= $(addprefix $(obj),$(COBJS))
-
-all:	$(LIB)
-
-#$(LIB):	$(OBJS)
-$(LIB):	$(obj).depend $(OBJS)
-	$(call cmd_link_o_target, $(OBJS))
-
-#########################################################################
-
-# defines $(obj).depend target
-include $(SRCTREE)/rules.mk
-
-sinclude $(obj).depend
-
-#########################################################################