Avoid aidl usage on mac builds

We do not have libbinder on mac, so that rules out using aidl files for
mac builds. To unbreak sdk_mac build targets, just use constant values
directly on mac instead of trying to use IInputConstants.

Bug: 152399927
Test: forrest
Change-Id: I21697ec02dbb215edd89d2f6849c9147f490af99
1 file changed