drm/amd/display: Removed power down on boot from DCN31

[Why]
Error message on Linux when booting.

[How]
Removed power down on boot from DCN31 HW init
to match DCN10 HW init.
Reviewed-by: Anthony Koo <Anthony.Koo@amd.com>
Acked-by: Agustin Gutierrez Sanchez <agustin.gutierrez@amd.com>
Signed-off-by: Derek Lai <derek.lai@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/display/dc/dcn31/dcn31_hwseq.c

@@ -73,7 +73,6 @@ void dcn31_init_hw(struct dc *dc)
 	struct resource_pool *res_pool = dc->res_pool;
 	uint32_t backlight = MAX_BACKLIGHT_LEVEL;
 	int i;
-	int edp_num;
 
 	if (dc->clk_mgr && dc->clk_mgr->funcs->init_clocks)
 		dc->clk_mgr->funcs->init_clocks(dc->clk_mgr);
@@ -209,48 +208,6 @@ void dcn31_init_hw(struct dc *dc)
 					!dc->res_pool->hubbub->ctx->dc->debug.disable_stutter);
 	}
 
-	/* In headless boot cases, DIG may be turned
-	 * on which causes HW/SW discrepancies.
-	 * To avoid this, power down hardware on boot
-	 * if DIG is turned on and seamless boot not enabled
-	 */
-	if (dc->config.power_down_display_on_boot) {
-		struct dc_link *edp_links[MAX_NUM_EDP];
-		struct dc_link *edp_link;
-		bool power_down = false;
-
-		get_edp_links(dc, edp_links, &edp_num);
-		if (edp_num) {
-			for (i = 0; i < edp_num; i++) {
-				edp_link = edp_links[i];
-				if (edp_link->link_enc->funcs->is_dig_enabled &&
-						edp_link->link_enc->funcs->is_dig_enabled(edp_link->link_enc) &&
-						dc->hwss.edp_backlight_control &&
-						dc->hwss.power_down &&
-						dc->hwss.edp_power_control) {
-					dc->hwss.edp_backlight_control(edp_link, false);
-					dc->hwss.power_down(dc);
-					dc->hwss.edp_power_control(edp_link, false);
-					power_down = true;
-				}
-			}
-		}
-		if (!power_down) {
-			for (i = 0; i < dc->link_count; i++) {
-				struct dc_link *link = dc->links[i];
-
-				if (link->ep_type == DISPLAY_ENDPOINT_PHY &&
-						link->link_enc->funcs->is_dig_enabled &&
-						link->link_enc->funcs->is_dig_enabled(link->link_enc) &&
-						dc->hwss.power_down) {
-					dc->hwss.power_down(dc);
-					break;
-				}
-
-			}
-		}
-	}
-
 	for (i = 0; i < res_pool->audio_count; i++) {
 		struct audio *audio = res_pool->audios[i];