obs-libdk: Unlock bitrates for surround layouts

Bitrate map was previously maxed at 256 kbs which is OK for stereo.
This commit enables up to 1024 kbs which can be used for surround
channel layouts.

plugins/obs-libfdk/obs-libfdk.c

@@ -72,7 +72,7 @@ static obs_properties_t *libfdk_properties(void *unused)
 	obs_properties_t *props = obs_properties_create();
 
 	obs_properties_add_int(props, "bitrate",
-			obs_module_text("Bitrate"), 32, 256, 32);
+			obs_module_text("Bitrate"), 32, 1024, 32);
 	obs_properties_add_bool(props, "afterburner",
 			obs_module_text("Afterburner"));