drm/amdgpu/display: fix compiler errors [-Werror,-Wparentheses-equality]

Remove extraneous parentheses around the comparison
to silence this warning

Signed-off-by: Pratik Vishwakarma <Pratik.Vishwakarma@amd.com>
Reviewed-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Pratik Vishwakarma 2018-12-31 13:42:53 +05:30 • committed by Alex Deucher
commit ba345a0242