NGG: Replace CreateInstrinsic(amdgcn_ubfe) with CreateUbfe()
NGG: Replace CreateInstrinsic(amdgcn_ubfe) with CreateUbfe()

Always use local implementation of ubfe consistently in NggPrimShader
class. The local version of ubfe employs shift+mask operations, which
are more friendly to backend.

Change-Id: I790e8b05539cf8f8c3ed449653b66ffeaedefee3

googlestadia/llpc,GPUOpen-Drivers/llpc,GPUOpen-Drivers/llpc,googlestadia/llpc,GPUOpen-Drivers/llpc,googlestadia/llpc,GPUOpen-Drivers/llpc,GPUOpen-Drivers/llpc,googlestadia/llpc,googlestadia/llpc