Add ROM pre-load settings for *Dragon Quest IV & VI*

Fixes #1404

retail/preLoadSettings/Title list.txt

@@ -4,9 +4,15 @@ Oide yo Doubutsu no Mori (Japan) (ADMJ) (3DS)
 Nolleooseyo Dongmurui Sup (Korea) (ADMK) (3DS)
 Big Bang Mini (USA) (CBBE) (DSi)
 Big Bang Mini (Europe) (CBBP) (DSi)
+Dragon Quest IV: Chapters of the Chosen (USA) (YIVE) (DSi/3DS)
+Dragon Quest: The Chapters of the Chosen (Europe) (YIVP) (DSi/3DS)
+Dragon Quest IV: Michibikareshi Mono-tachi (Japan) (YIVJ) (DSi/3DS)
 Dragon Quest V: Hand of the Heavenly Bride (USA) (YV5E) (DSi/3DS)
 Dragon Quest: The Hand of the Heavenly Bride (Europe) (YV5P) (DSi/3DS)
 Dragon Quest V: Tenkuu no Hanayome (Japan) (YV5J) (DSi/3DS)
+Dragon Quest VI: Realms of Revelation (USA) (YVIE) (DSi/3DS)
+Dragon Quest VI: Realms of Reverie (Europe) (YVIP) (DSi/3DS)
+Dragon Quest VI: Maboroshi no Daichi (Japan) (YVIJ) (DSi/3DS)
 Kirby: Canvas Curse (USA) (ATKE) (3DS)
 Kirby: Power Paintbrush (Europe) (ATKP) (3DS)
 Touch! Kirby (Japan) (ATKJ) (3DS)