[PATCH] USB gadget: gadget zero, simplified controller-specific configuration

This removes several controller-specific #define, and
converts to using the config_buf utilities.  Depends
on the patch I submitted yesterday.  Looking simpler!


Simplify "gadget zero" compile-time configuration.

This removes several controller-specific compile-time config options;
the others are about to be autoconfigured.

 - HIGHSPEED replaced by CONFIG_USB_GADGET_DUALSPEED
 - Default to self-powered operation
 - There's no UI for remote wakeup

It also uses the new config_buf utilities, so it's a bit easier to see
what's really going on (this driver implements four configurations).

drivers/usb/gadget/Makefile

@@ -8,7 +8,7 @@ obj-$(CONFIG_USB_GOKU)		+= goku_udc.o
 #
 # USB gadget drivers
 #
-g_zero-objs			:= zero.o usbstring.o
+g_zero-objs			:= zero.o usbstring.o config.o
 g_ether-objs			:= ether.o usbstring.o config.o
 g_serial-objs			:= serial.o usbstring.o
 gadgetfs-objs			:= inode.o usbstring.o