usb: musb-new: CONFIG_MUSB prefix replacement with CONFIG_USB_MUSB

USB-related options are usually prefixed with CONFIG_USB and platform-specific
adaptation for the MUSB controller already have a CONFIG_USB_MUSB prefix, so
this switches all MUSB-related options to a CONFIG_USB_MUSB prefix, for
consistency.

Signed-off-by: Paul Kocialkowski <contact@paulk.fr>
diff --git a/drivers/usb/musb/musb_hcd.h b/drivers/usb/musb/musb_hcd.h
index 0c8e75d..831957d 100644
--- a/drivers/usb/musb/musb_hcd.h
+++ b/drivers/usb/musb/musb_hcd.h
@@ -17,8 +17,8 @@
 extern unsigned char new[];
 #endif
 
-#ifndef CONFIG_MUSB_TIMEOUT
-# define CONFIG_MUSB_TIMEOUT 100000
+#ifndef CONFIG_USB_MUSB_TIMEOUT
+# define CONFIG_USB_MUSB_TIMEOUT 100000
 #endif
 
 /* This defines the endpoint number used for control transfers */