drm/amdgpu: Add vega20 to asic_type enum.

Add vega20 to amd_asic_type enum and amdgpu_asic_name[].
Reviewed-by: NChristian König <christian.koenig@amd.com>
Signed-off-by: NFeifei Xu <Feifei.Xu@amd.com>
Reviewed-by: NAlex Deucher <alexander.deucher@amd.com>
Reviewed-by: NHawking Zhang <Hawking.Zhang@amd.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>

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

@@ -86,6 +86,7 @@ static const char *amdgpu_asic_name[] = {
 	"VEGAM",
 	"VEGA10",
 	"VEGA12",
+	"VEGA20",
 	"RAVEN",
 	"LAST",
 };

include/drm/amd_asic_type.h

@@ -47,6 +47,7 @@ enum amd_asic_type {
 	CHIP_VEGAM,
 	CHIP_VEGA10,
 	CHIP_VEGA12,
+	CHIP_VEGA20,
 	CHIP_RAVEN,
 	CHIP_LAST,
 };