drm/amdgpu: correct reference clock value on navi10

remove the divisor 4

Signed-off-by: Tao Zhou <tao.zhou1@amd.com>
Acked-by: Jack Xiao <Jack.Xiao@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
1 file changed