usb: musb: Kconfig: drop unnecessary dependencies

those glues can build cleanly anywhere.
Signed-off-by: Felipe Balbi <balbi@ti.com>

drivers/usb/musb/Kconfig

@@ -55,7 +55,6 @@ config USB_MUSB_AM35X
 
 config USB_MUSB_DSPS
 	tristate "TI DSPS platforms"
-	depends on SOC_TI81XX || SOC_AM33XX
 
 config USB_MUSB_BLACKFIN
 	tristate "Blackfin"
@@ -63,7 +62,6 @@ config USB_MUSB_BLACKFIN
 
 config USB_MUSB_UX500
 	tristate "U8500 and U5500"
-	depends on (ARCH_U8500 && AB8500_USB)
 
 endchoice