drm/amd/display: make get_refresh_rate() static

It's not used outside of dcn30_resource.c.

Reported-by: kernel test robot <lkp@intel.com>
Reviewed-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Alex Deucher 2022-07-06 10:04:15 -04:00
commit 30ef0808e6