drm/amd/display: avoid crash and add z8_marks related in dml

[why]
add dml1 used calculate_wm_and_dlg function pointer check to prevent crash.
add z8 watermarks to struct for later asic use

Reviewed-by: Alvin Lee <alvin.lee2@amd.com>
Acked-by: Stylon Wang <stylon.wang@amd.com>
Signed-off-by: Charlene Liu <charlene.liu@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

Author: charliu-AMDENG

drivers/gpu/drm/amd/display/dc/dcn30/dcn30_resource.c

@@ -2063,7 +2063,8 @@ bool dcn30_validate_bandwidth(struct dc *dc,
 	}
 
 	DC_FP_START();
-	dc->res_pool->funcs->calculate_wm_and_dlg(dc, context, pipes, pipe_cnt, vlevel);
+	if (dc->res_pool->funcs->calculate_wm_and_dlg)
+		dc->res_pool->funcs->calculate_wm_and_dlg(dc, context, pipes, pipe_cnt, vlevel);
 	DC_FP_END();
 
 	BW_VAL_TRACE_END_WATERMARKS();

drivers/gpu/drm/amd/display/dc/dcn31/dcn31_resource.c

@@ -1781,8 +1781,8 @@ bool dcn31_validate_bandwidth(struct dc *dc,
 		BW_VAL_TRACE_SKIP(fast);
 		goto validate_out;
 	}
-
-	dc->res_pool->funcs->calculate_wm_and_dlg(dc, context, pipes, pipe_cnt, vlevel);
+	if (dc->res_pool->funcs->calculate_wm_and_dlg)
+		dc->res_pool->funcs->calculate_wm_and_dlg(dc, context, pipes, pipe_cnt, vlevel);
 
 	BW_VAL_TRACE_END_WATERMARKS();
 

drivers/gpu/drm/amd/display/dc/dcn314/dcn314_resource.c

@@ -1740,8 +1740,8 @@ bool dcn314_validate_bandwidth(struct dc *dc,
 		BW_VAL_TRACE_SKIP(fast);
 		goto validate_out;
 	}
-
-	dc->res_pool->funcs->calculate_wm_and_dlg(dc, context, pipes, pipe_cnt, vlevel);
+	if (dc->res_pool->funcs->calculate_wm_and_dlg)
+		dc->res_pool->funcs->calculate_wm_and_dlg(dc, context, pipes, pipe_cnt, vlevel);
 
 	BW_VAL_TRACE_END_WATERMARKS();
 

drivers/gpu/drm/amd/display/dc/inc/hw/dchubbub.h

@@ -49,6 +49,8 @@ struct dcn_hubbub_wm_set {
 	uint32_t dram_clk_change;
 	uint32_t usr_retrain;
 	uint32_t fclk_pstate_change;
+	uint32_t sr_enter_exit_Z8;
+	uint32_t sr_enter_Z8;
 };
 
 struct dcn_hubbub_wm {