USB: gadget: atmel_usba: add DT support

Allow to compile the driver all the time if AT91 enabled.

Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Acked-by: Felipe Balbi <balbi@ti.com>
Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Tested-by: Bo Shen <voice.shen@atmel.com>
diff --git a/drivers/usb/gadget/Kconfig b/drivers/usb/gadget/Kconfig
index 83300d9..5e47d50 100644
--- a/drivers/usb/gadget/Kconfig
+++ b/drivers/usb/gadget/Kconfig
@@ -156,7 +156,7 @@
 
 config USB_ATMEL_USBA
 	tristate "Atmel USBA"
-	depends on AVR32 || ARCH_AT91SAM9RL || ARCH_AT91SAM9G45
+	depends on AVR32 || ARCH_AT91
 	help
 	  USBA is the integrated high-speed USB Device controller on
 	  the AT32AP700x, some AT91SAM9 and AT91CAP9 processors from Atmel.