drm/amdgpu/gfx11: export gfx_v11_0_request_gfx_index_mutex()

It will be used by the queue reset code.
Acked-by: Vitaly Prosyak <vitaly.prosyak@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/amdgpu/gfx_v11_0.c

@@ -4742,8 +4742,8 @@ static int gfx_v11_0_wait_for_idle(void *handle)
 	return -ETIMEDOUT;
 }
 
-static int gfx_v11_0_request_gfx_index_mutex(struct amdgpu_device *adev,
-					     bool req)
+int gfx_v11_0_request_gfx_index_mutex(struct amdgpu_device *adev,
+				      bool req)
 {
 	u32 i, tmp, val;
 

drivers/gpu/drm/amd/amdgpu/gfx_v11_0.h

@@ -26,4 +26,7 @@
 
 extern const struct amdgpu_ip_block_version gfx_v11_0_ip_block;
 
+int gfx_v11_0_request_gfx_index_mutex(struct amdgpu_device *adev,
+				      bool req);
+
 #endif