drm/amd/display: Increase ips2_eval delay for DCN35

[Why]
New worst-case measurement observed at 1897us.

[How]
Increase to 2000us to cover the new worst case + margin.
Reviewed-by: Ovidiu Bunea <ovidiu.bunea@amd.com>
Acked-by: Aurabindo Pillai <aurabindo.pillai@amd.com>
Signed-off-by: Nicholas Kazlauskas <nicholas.kazlauskas@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

@@ -781,7 +781,7 @@ static const struct dc_debug_options debug_defaults_drv = {
 	.disable_z10 = false,
 	.ignore_pg = true,
 	.psp_disabled_wa = true,
-	.ips2_eval_delay_us = 1650,
+	.ips2_eval_delay_us = 2000,
 	.ips2_entry_delay_us = 800,
 	.disable_dmub_reallow_idle = true,
 	.static_screen_wait_frames = 2,