drm/amdgpu/vce2: fix ip block reference

Need to use the correct IP block type.  VCE vs VCN.
Fixes mclk issues on Hawaii.

Suggested by selendym.

Fixes: 82ae661 ("drm/amdgpu: update the handle ptr in wait_for_idle")
Closes: https://gitlab.freedesktop.org/drm/amd/-/issues/3997
Reviewed-by: Boyuan Zhang <Boyuan.Zhang@amd.com>
Cc: Sunil Khatri <sunil.khatri@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/amdgpu/vce_v2_0.c

@@ -284,7 +284,7 @@ static int vce_v2_0_stop(struct amdgpu_device *adev)
 		return 0;
 	}
 
-	ip_block = amdgpu_device_ip_get_ip_block(adev, AMD_IP_BLOCK_TYPE_VCN);
+	ip_block = amdgpu_device_ip_get_ip_block(adev, AMD_IP_BLOCK_TYPE_VCE);
 	if (!ip_block)
 		return -EINVAL;