usb: don't enter usb subdirectories directly

Instead, make we enter usb/ directory on all
needed cases and enter the subdirectories from
drivers/usb/Makefile.
Signed-off-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

drivers/Makefile

@@ -64,12 +64,10 @@ obj-$(CONFIG_ATA_OVER_ETH)	+= block/aoe/
 obj-$(CONFIG_PARIDE) 		+= block/paride/
 obj-$(CONFIG_TC)		+= tc/
 obj-$(CONFIG_UWB)		+= uwb/
-obj-$(CONFIG_USB_OTG_UTILS)	+= usb/otg/
+obj-$(CONFIG_USB_OTG_UTILS)	+= usb/
 obj-$(CONFIG_USB)		+= usb/
-obj-$(CONFIG_USB_MUSB_HDRC)	+= usb/musb/
-obj-$(CONFIG_USB_RENESAS_USBHS)	+= usb/renesas_usbhs/
 obj-$(CONFIG_PCI)		+= usb/
-obj-$(CONFIG_USB_GADGET)	+= usb/gadget/
+obj-$(CONFIG_USB_GADGET)	+= usb/
 obj-$(CONFIG_SERIO)		+= input/serio/
 obj-$(CONFIG_GAMEPORT)		+= input/gameport/
 obj-$(CONFIG_INPUT)		+= input/

drivers/usb/Makefile

@@ -45,3 +45,8 @@ obj-$(CONFIG_EARLY_PRINTK_DBGP)	+= early/
 
 obj-$(CONFIG_USB_ATM)		+= atm/
 obj-$(CONFIG_USB_SPEEDTOUCH)	+= atm/
+
+obj-$(CONFIG_USB_MUSB_HDRC)	+= musb/
+obj-$(CONFIG_USB_RENESAS_USBHS)	+= renesas_usbhs/
+obj-$(CONFIG_USB_OTG_UTILS)	+= otg/
+obj-$(CONFIG_USB_GADGET)	+= gadget/