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-new/Makefile b/drivers/usb/musb-new/Makefile
index 9edeece..fd9df72 100644
--- a/drivers/usb/musb-new/Makefile
+++ b/drivers/usb/musb-new/Makefile
@@ -2,9 +2,9 @@
 # for USB OTG silicon based on Mentor Graphics INVENTRA designs
 #
 
-obj-$(CONFIG_MUSB_GADGET) += musb_gadget.o musb_gadget_ep0.o musb_core.o
-obj-$(CONFIG_MUSB_GADGET) += musb_uboot.o
-obj-$(CONFIG_MUSB_HOST) += musb_host.o musb_core.o musb_uboot.o
+obj-$(CONFIG_USB_MUSB_GADGET) += musb_gadget.o musb_gadget_ep0.o musb_core.o
+obj-$(CONFIG_USB_MUSB_GADGET) += musb_uboot.o
+obj-$(CONFIG_USB_MUSB_HOST) += musb_host.o musb_core.o musb_uboot.o
 obj-$(CONFIG_USB_MUSB_DSPS) += musb_dsps.o
 obj-$(CONFIG_USB_MUSB_AM35X) += am35x.o
 obj-$(CONFIG_USB_MUSB_OMAP2PLUS) += omap2430.o