[PATCH] USB Gadget: Use automatic endpoint selection in file-storage

This patch imports the endpoint auto-config library into the file-storage
gadget, simplifying the code needed for endpoint selection and removing
almost all dependencies on the controller type from the driver.  It also
changes some log messages for reporting fatal problems from INFO to ERROR.

drivers/usb/gadget/Makefile

@@ -13,7 +13,8 @@ g_zero-objs			:= zero.o usbstring.o config.o epautoconf.o
 g_ether-objs			:= ether.o usbstring.o config.o epautoconf.o
 g_serial-objs			:= serial.o usbstring.o
 gadgetfs-objs			:= inode.o
-g_file_storage-objs		:= file_storage.o usbstring.o config.o
+g_file_storage-objs		:= file_storage.o usbstring.o config.o \
+					epautoconf.o
 
 ifeq ($(CONFIG_USB_ETH_RNDIS),y)
 	g_ether-objs		+= rndis.o