drm/amd/powerplay: add parameter of the mclk switch latency time

Signed-off-by: NRex Zhu <Rex.Zhu@amd.com>
Reviewed-by: NKen Wang <Qingqing.Wang@amd.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/powerplay/inc/amd_powerplay.h

@@ -260,6 +260,7 @@ enum amd_pp_clock_type {
 struct amd_pp_clocks {
 	uint32_t count;
 	uint32_t clock[MAX_NUM_CLOCKS];
+	uint32_t latency[MAX_NUM_CLOCKS];
 };