drm/amd/powerplay: drop unnecessary message support check

These messages are known to be supported by all ASICs.
Signed-off-by: NEvan Quan <evan.quan@amd.com>
Reviewed-by: NAlex Deucher <alexander.deucher@amd.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/powerplay/amdgpu_smu.c

@@ -34,7 +34,6 @@
 #include "sienna_cichlid_ppt.h"
 #include "renoir_ppt.h"
 #include "amd_pcie.h"
-#include "smu_cmn.h"
 
 /*
  * DO NOT use these for err/warn/info/debug messages.
@@ -1590,14 +1589,6 @@ int smu_set_mp1_state(struct smu_context *smu,
 		return 0;
 	}
 
-	/* some asics may not support those messages */
-	if (smu_cmn_to_asic_specific_index(smu,
-					   CMN2ASIC_MAPPING_MSG,
-					   msg) < 0) {
-		mutex_unlock(&smu->mutex);
-		return 0;
-	}
-
 	ret = smu_send_smc_msg(smu, msg, NULL);
 	if (ret)
 		dev_err(smu->adev->dev, "[PrepareMp1] Failed!\n");