drm/i915/bw: abstract intel_bw_qgv_point_peakbw()

Add intel_bw_qgv_point_peakbw() helper to avoid looking at struct
intel_bw_state internals outside of intel_bw.c.

Reviewed-by: Imre Deak <[e-mail]>
Link: https://lore.kernel.org/r/49a[e-mail]
Signed-off-by: Jani Nikula <[e-mail]>

drivers/gpu/drm/i915/display/intel_bw.c

···
 
 	return bw_state->pipe_sagv_reject == 0;
 }
+
+int intel_bw_qgv_point_peakbw(const struct intel_bw_state *bw_state)
+{
+	return bw_state->qgv_point_peakbw;
+}

drivers/gpu/drm/i915/display/intel_bw.h

···
 			      const struct intel_bw_state *bw_state);
 void icl_sagv_pre_plane_update(struct intel_atomic_state *state);
 void icl_sagv_post_plane_update(struct intel_atomic_state *state);
+int intel_bw_qgv_point_peakbw(const struct intel_bw_state *bw_state);
 
 #endif /* __INTEL_BW_H__ */

drivers/gpu/drm/i915/display/intel_pmdemand.c

···
 
 	/* firmware will calculate the qclk_gv_index, requirement is set to 0 */
 	new_pmdemand_state->params.qclk_gv_index = 0;
-	new_pmdemand_state->params.qclk_gv_bw = new_bw_state->qgv_point_peakbw;
+	new_pmdemand_state->params.qclk_gv_bw = intel_bw_qgv_point_peakbw(new_bw_state);
 
 	new_dbuf_state = intel_atomic_get_dbuf_state(state);
 	if (IS_ERR(new_dbuf_state))