pvr: Switch to common pipeline cache implementation
What does this MR do and why?
We don't currently make use of pipeline caching, but the common implementation handles the boilerplate we had in pvr_pipeline_cache.c
for us.
Signed-off-by: Matt Coster <matt.coster@imgtec.com>
Reviewed-by: Frank Binns <frank.binns@imgtec.com>
Edited by Matt Coster