drm/amdgpu/discovery: add gfx v12_0 ip block

Add gfx v12_0 ip block.

v2: Squash in update (Alex)
v3: add exp flag (Alex)
Signed-off-by: Likun Gao <Likun.Gao@amd.com>
Reviewed-by: Hawking Zhang <Hawking.Zhang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

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

@@ -76,6 +76,7 @@
 #include "ih_v7_0.h"
 #include "gfx_v10_0.h"
 #include "gfx_v11_0.h"
+#include "gfx_v12_0.h"
 #include "sdma_v5_0.h"
 #include "sdma_v5_2.h"
 #include "sdma_v6_0.h"
@@ -2049,6 +2050,12 @@ static int amdgpu_discovery_set_gc_ip_blocks(struct amdgpu_device *adev)
 	case IP_VERSION(11, 5, 1):
 		amdgpu_device_ip_block_add(adev, &gfx_v11_0_ip_block);
 		break;
+	case IP_VERSION(12, 0, 0):
+	case IP_VERSION(12, 0, 1):
+		if (!amdgpu_exp_hw_support)
+			return -EINVAL;
+		amdgpu_device_ip_block_add(adev, &gfx_v12_0_ip_block);
+		break;
 	default:
 		dev_err(adev->dev, "Failed to add gfx ip block(GC_HWIP:0x%x)\n",
 			amdgpu_ip_version(adev, GC_HWIP, 0));