drm/msm/sde: add field for perf features in hw block info

Current code maintains all the features in the same
member of the hw block info struct, this is a problem
since this limits all the features to the length
of the same mask and growing features might require
more than the bits allowed by this mask.
Add code to split the performance related features
to a different member of the struct.

Change-Id: I6068347eb3a83b61f42ab183f77c2e0185a680cb
Signed-off-by: Ingrid Gallardo <ingridg@codeaurora.org>