usb: musb: add support for ux500 platform

Initial support for u8500 and u5500 platform.

Signed-off-by: Mian Yousaf Kaukab <mian.yousaf.kaukab@stericsson.com>
Acked-by: Linus Walleij <linus.walleij@stericsson.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
diff --git a/drivers/usb/musb/Kconfig b/drivers/usb/musb/Kconfig
index 03a4290..19145f6 100644
--- a/drivers/usb/musb/Kconfig
+++ b/drivers/usb/musb/Kconfig
@@ -60,6 +60,10 @@
 	bool "Blackfin"
 	depends on (BF54x && !BF544) || (BF52x && ! BF522 && !BF523)
 
+config USB_MUSB_UX500
+	bool "U8500 and U5500"
+	depends on (ARCH_U8500 && AB8500_USB) || (ARCH_U5500)
+
 endchoice
 
 choice