msm: kgsl: Set CX iPeak threshold frequency for A610 GPU

Configure CX iPeak threshold frequency for A610 GPU. Kgsl
driver notifies the CX iPeak LM driver if GPU is running
at or above this threshold frequency.

Change-Id: Ibd1d4f2eddd34e3cbdb77104c2cd407a45ffd14d
Signed-off-by: Deepak Kumar <dkumar@codeaurora.org>