drm/amdgpu: add ELM/BAF asic types

New asic types for ellesmere and baffin.

Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Reviewed-by: Jammy Zhou <Jammy.Zhou@amd.com>
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
index c7974ff..077d4cc 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
@@ -59,6 +59,8 @@
 	"FIJI",
 	"CARRIZO",
 	"STONEY",
+	"ELLESMERE",
+	"BAFFIN",
 	"LAST",
 };