msm: kgsl: Enable IFPC feature for A635 GPU

IFPC stands for Inter-Frame Power Collapse.
Enable IFPC for A635 GPU for power saving purpose.

Change-Id: I989d90e76520e316a3200004a2d3e7e26f0a45a5
Signed-off-by: Hareesh Gundu <hareeshg@codeaurora.org>