drm/amdgpu: add UVD support for Stoney

Stoney is UVD 6.x.
Signed-off-by: Samuel Li <samuel.li@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

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

@@ -53,6 +53,7 @@
 #define FIRMWARE_TONGA		"amdgpu/tonga_uvd.bin"
 #define FIRMWARE_CARRIZO	"amdgpu/carrizo_uvd.bin"
 #define FIRMWARE_FIJI		"amdgpu/fiji_uvd.bin"
+#define FIRMWARE_STONEY		"amdgpu/stoney_uvd.bin"
 
 /**
  * amdgpu_uvd_cs_ctx - Command submission parser context
@@ -83,6 +84,7 @@ MODULE_FIRMWARE(FIRMWARE_MULLINS);
 MODULE_FIRMWARE(FIRMWARE_TONGA);
 MODULE_FIRMWARE(FIRMWARE_CARRIZO);
 MODULE_FIRMWARE(FIRMWARE_FIJI);
+MODULE_FIRMWARE(FIRMWARE_STONEY);
 
 static void amdgpu_uvd_note_usage(struct amdgpu_device *adev);
 static void amdgpu_uvd_idle_work_handler(struct work_struct *work);
@@ -124,6 +126,9 @@ int amdgpu_uvd_sw_init(struct amdgpu_device *adev)
 	case CHIP_CARRIZO:
 		fw_name = FIRMWARE_CARRIZO;
 		break;
+	case CHIP_STONEY:
+		fw_name = FIRMWARE_STONEY;
+		break;
 	default:
 		return -EINVAL;
 	}