msm: kgsl: Add GPU_RBBM_GBIF_CLIENT_QOS_CNTL to powerup register list

GPU_RBBM_GBIF_CLIENT_QOS_CNTL register is getting updated for
every wake up sequence but not retained across IFPC.

Add this register to GPU specific powerup register list so as to
restore its value across IFPC.

Change-Id: I3fe15ad43af1f0f1adc49764e749bb89e4cf8a65
Signed-off-by: Rajesh Kemisetti <rajeshk@codeaurora.org>