drm/amdgpu: simplify mec2 fw check

Check if mec2 fw exists rather than checking asic types.
Reviewed-by: Evan Quan <evan.quan@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c

@@ -1340,8 +1340,7 @@ static int amdgpu_debugfs_firmware_info(struct seq_file *m, void *data)
 		   fw_info.feature, fw_info.ver);
 
 	/* MEC2 */
-	if (adev->asic_type == CHIP_KAVERI ||
-	    (adev->asic_type > CHIP_TOPAZ && adev->asic_type != CHIP_STONEY)) {
+	if (adev->gfx.mec2_fw) {
 		query_fw.index = 1;
 		ret = amdgpu_firmware_info(&fw_info, &query_fw, adev);
 		if (ret)