drm/amd/display: Add config support entry to replay caps debugfs

[Why]
replay_capability debugfs tells whether sink and driver support
replay feature. However replay enablement also depends on
whether it is enabled/disabled via amdgpu module params.

[How]
Add 'Config support' entry to output current replay config.
Reviewed-by: ChiaHsuan Chung <chiahsuan.chung@amd.com>
Acked-by: Zaeem Mohamed <zaeem.mohamed@amd.com>
Signed-off-by: Roman Li <roman.li@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_debugfs.c

@@ -1008,6 +1008,7 @@ static int replay_capability_show(struct seq_file *m, void *data)
 
 	seq_printf(m, "Sink support: %s\n", str_yes_no(sink_support_replay));
 	seq_printf(m, "Driver support: %s\n", str_yes_no(driver_support_replay));
+	seq_printf(m, "Config support: %s\n", str_yes_no(link->replay_settings.config.replay_supported));
 
 	return 0;
 }