drm/amdgpu: add navy_flounder asic type

Signed-off-by: Jiansong Chen <[e-mail]>
Reviewed-by: Tao Zhou <[e-mail]>
Signed-off-by: Alex Deucher <[e-mail]>

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

···
 	"NAVI14",
 	"NAVI12",
 	"SIENNA_CICHLID",
+	"NAVY_FLOUNDER",
 	"LAST",
 };
 

include/drm/amd_asic_type.h

···
 	CHIP_NAVI14,	/* 26 */
 	CHIP_NAVI12,	/* 27 */
 	CHIP_SIENNA_CICHLID,	/* 28 */
+	CHIP_NAVY_FLOUNDER,	/* 29 */
 	CHIP_LAST,
 };