drm/amdgpu: add GMC11 support for GC 11.0.2

Add initial support for GC 11.0.2.
Reviewed-by: Hawking Zhang <Hawking.Zhang@amd.com>
Signed-off-by: Flora Cui <flora.cui@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/amdgpu/gmc_v11_0.c

@@ -698,6 +698,7 @@ static int gmc_v11_0_sw_init(void *handle)
 
 	switch (adev->ip_versions[GC_HWIP][0]) {
 	case IP_VERSION(11, 0, 0):
+	case IP_VERSION(11, 0, 2):
 		adev->num_vmhubs = 2;
 		/*
 		 * To fulfill 4-level page support,