drm/amd/display: Allow HPO PG for DCN35

[Why]
HPO can be power gated unconditionally for
DCN35.

[How]
Set disable flag to false.
Reviewed-by: Nicholas Kazlauskas <nicholas.kazlauskas@amd.com>
Acked-by: Roman Li <roman.li@amd.com>
Signed-off-by: Duncan Ma <duncan.ma@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/resource/dcn35/dcn35_resource.c

@@ -721,7 +721,7 @@ static const struct dc_debug_options debug_defaults_drv = {
 	.disable_dpp_power_gate = true,
 	.disable_hubp_power_gate = true,
 	.disable_optc_power_gate = true, /*should the same as above two*/
-	.disable_hpo_power_gate = true, /*dmubfw force domain25 on*/
+	.disable_hpo_power_gate = false, /*dmubfw force domain25 on*/
 	.disable_clock_gate = false,
 	.disable_dsc_power_gate = true,
 	.vsr_support = true,