Libretro: Add Super Game Boy Color support (closes #3188)

CHANGES

@@ -30,6 +30,7 @@ Misc:
  - GB Serialize: Add missing savestate support for MBC6 and NT (newer)
  - GBA: Improve detection of valid ELF ROMs
  - GBA Audio: Remove broken XQ audio pending rewrite
+ - Libretro: Add Super Game Boy Color support (closes mgba.io/i/3188)
  - mGUI: Enable auto-softpatching (closes mgba.io/i/2899)
  - mGUI: Persist fast forwarding after closing menu (fixes mgba.io/i/2414)
  - Qt: Handle multiple save game files for disparate games separately (fixes mgba.io/i/2887)

src/platform/libretro/libretro.c

@@ -268,6 +268,8 @@ static void _reloadSettings(void) {
 			model = GB_MODEL_SGB;
 		} else if (strcmp(var.value, "Game Boy Color") == 0) {
 			model = GB_MODEL_CGB;
+		} else if (strcmp(var.value, "Super Game Boy Color") == 0) {
+			model = GB_MODEL_SCGB;
 		} else if (strcmp(var.value, "Game Boy Advance") == 0) {
 			model = GB_MODEL_AGB;
 		} else {
@@ -278,6 +280,8 @@ static void _reloadSettings(void) {
 		mCoreConfigSetDefaultValue(&core->config, "gb.model", modelName);
 		mCoreConfigSetDefaultValue(&core->config, "sgb.model", modelName);
 		mCoreConfigSetDefaultValue(&core->config, "cgb.model", modelName);
+		mCoreConfigSetDefaultValue(&core->config, "cgb.hybridModel", modelName);
+		mCoreConfigSetDefaultValue(&core->config, "cgb.sgbModel", modelName);
 	}
 
 	var.key = "mgba_sgb_borders";

src/platform/libretro/libretro_core_options.h

@@ -87,11 +87,12 @@ struct retro_core_option_v2_definition option_defs_us[] = {
       NULL,
       "system",
       {
-         { "Autodetect",       NULL },
-         { "Game Boy",         NULL },
-         { "Super Game Boy",   NULL },
-         { "Game Boy Color",   NULL },
-         { "Game Boy Advance", NULL },
+         { "Autodetect",           NULL },
+         { "Game Boy",             NULL },
+         { "Super Game Boy",       NULL },
+         { "Game Boy Color",       NULL },
+         { "Super Game Boy Color", NULL },
+         { "Game Boy Advance",     NULL },
          { NULL, NULL },
       },
       "Autodetect"