gpu: msm: Fix braces around nested scalar

 * Fixes compilation errors in kgsl_drm

Change-Id: Ie4fc7cf92a793443a4e4a7eda725c764a0f8c226
Fix some warnings.

Allows the kernel to build with Werror and aosp gcc 4.7

Change-Id: Ifa9f19dae860610721f7f860e06c594d50484bb3
Signed-off-by: Evan McClain <aeroevan@gmail.com>