drm/amdgpu: add gmc v11 support for GC 11.0.4

Add gmc v11 support for GC 11.0.4.
Signed-off-by: Yifan Zhang <yifan1.zhang@amd.com>
Reviewed-by: Aaron Liu <aaron.liu@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

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

@@ -759,6 +759,7 @@ static int gmc_v11_0_sw_init(void *handle)
 	case IP_VERSION(11, 0, 1):
 	case IP_VERSION(11, 0, 2):
 	case IP_VERSION(11, 0, 3):
+	case IP_VERSION(11, 0, 4):
 		adev->num_vmhubs = 2;
 		/*
 		 * To fulfill 4-level page support,