USB HAL: Enable gadget HAL based on property

Introduce a property ro.vendor.usb.use_gadget_hal to be defined
in a target's build/default.prop to allow USB HAL to be enabled
without USB Gadget HAL.

Change-Id: I57eb91138cc968086da0c7475da417be9e44e83b
1 file changed
tree: cb2fe971bd10fab007616d13d06a4059d7874fea
  1. hal/