msm: kgsl: Add apb_pclk to the clock list and increase max clock count

KGSL needs to enable apb_pclk for QDSS register access.
Add apb_pclk to the clock list. Increment KGSL_MAX_CLKS
and MAX_GMU_CLKS to support apb_clk.

Change-Id: I9a98fa7ef09f98bdd0897a9cd1dd51b6468a5a51
Signed-off-by: Harshitha Sai Neelati <hsaine@codeaurora.org>