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/include/configs/cm_t3517.h b/include/configs/cm_t3517.h
index a8d0b97..cf08414 100644
--- a/include/configs/cm_t3517.h
+++ b/include/configs/cm_t3517.h
@@ -112,8 +112,8 @@
 #define CONFIG_OMAP_EHCI_PHY1_RESET_GPIO 146
 #define CONFIG_OMAP_EHCI_PHY2_RESET_GPIO 147
 #else /* !CONFIG_USB_MUSB_AM35X */
-#define CONFIG_MUSB_HOST
-#define CONFIG_MUSB_PIO_ONLY
+#define CONFIG_USB_MUSB_HOST
+#define CONFIG_USB_MUSB_PIO_ONLY
 #endif /* CONFIG_USB_MUSB_AM35X */
 
 #define CONFIG_USB_STORAGE