drm/amdgpu/powerplay: fix warning in smu_v11_0.c

Cast to make min() happy.  The values are well within
range.

Reviewed-by: Evan Quan <evan.quan@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Alex Deucher 2020-01-09 15:41:10 -05:00
commit 40c9e7b578