drm/amd/display: Enable dcn314 DPP RCO

[Why and How]
Add back debug bits enabling RCO for dcn314 as underflow
associated with this change has been resolved

Acked-by: Stylon Wang <stylon.wang@amd.com>
Signed-off-by: Daniel Miess <daniel.miess@amd.com>
Reviewed-by: Jun Lei <jun.lei@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/dcn314/dcn314_resource.c

@@ -904,6 +904,22 @@ static const struct dc_debug_options debug_defaults_drv = {
 			.afmt = true,
 		}
 	},
+
+	.root_clock_optimization = {
+			.bits = {
+					.dpp = true,
+					.dsc = false,
+					.hdmistream = false,
+					.hdmichar = false,
+					.dpstream = false,
+					.symclk32_se = false,
+					.symclk32_le = false,
+					.symclk_fe = false,
+					.physymclk = false,
+					.dpiasymclk = false,
+			}
+	},
+
 	.seamless_boot_odm_combine = true
 };