init.hammerhead.usb.rc: Add support for USB MIDI function
init.hammerhead.usb.rc: Add support for USB MIDI function

Change-Id: Iebfb15fcc2c8b793c8392cbba7991fc669e7f72f

maruos/android_device_lge_hammerhead,maruos/android_device_lge_hammerhead,maruos/android_device_lge_hammerhead,maruos/android_device_lge_hammerhead