Separate the function and struct of RLC from the file of GFX.
Abstract the function of amdgpu_gfx_rlc_fini.
Signed-off-by: NLikun Gao <Likun.Gao@amd.com>
Acked-by: NChristian König <christian.koenig@amd.com>
Reviewed-by: NAlex Deucher <alexander.deucher@amd.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>