Expose the function of smu_read_smc_arg to get argument value from SMU11.
Signed-off-by: NLikun Gao <Likun.Gao@amd.com>
Reviewed-by: NKevin Wang <Kevin1.Wang@amd.com>
Acked-by: NAlex Deucher <alexander.deucher@amd.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>