drm/amdgpu: Add flag to enable indirect RLCG access for gfx v9.4.3

The "rlcg_reg_access_supported" flag is missing. Add it back in.
Signed-off-by: Victor Lu <victorchengchi.lu@amd.com>
Reviewed-by: Lijo Lazar <lijo.lazar@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/amdgpu/gfx_v9_4_3.c

@@ -1102,6 +1102,7 @@ static void gfx_v9_4_3_init_rlcg_reg_access_ctrl(struct amdgpu_device *adev)
 		reg_access_ctrl->grbm_idx = SOC15_REG_OFFSET(GC, GET_INST(GC, xcc_id), regGRBM_GFX_INDEX);
 		reg_access_ctrl->spare_int = SOC15_REG_OFFSET(GC, GET_INST(GC, xcc_id), regRLC_SPARE_INT);
 	}
+	adev->gfx.rlc.rlcg_reg_access_supported = true;
 }
 
 static int gfx_v9_4_3_rlc_init(struct amdgpu_device *adev)