msm: kgsl: Add BICUBIC registers to power up register list

These registers are driver owned and need to be saved/restored
across preemption and IFPC.

Change-Id: Ic9ccff0a047fb5566a7c20e860aefc9dd87284a0
Signed-off-by: Harshdeep Dhatt <hdhatt@codeaurora.org>
Signed-off-by: Raghu Ananya Arabolu <rarabolu@codeaurora.org>