olpc-xo-1: getty should default on VGA

target/config/Config.in.runtime

@@ -315,6 +315,7 @@ config ADK_RUNTIME_GETTY_VGA
 	default y if ADK_TARGET_SYSTEM_LEMOTE_YEELONG
 	default y if ADK_TARGET_SYSTEM_ARANYM_M68K
 	default y if ADK_TARGET_SYSTEM_HP_JORNADA
+	default y if ADK_TARGET_SYSTEM_OLPC_XO_1
 	default y if ADK_TARGET_MODEL_PCENGINES_ALIX1C
 	default n
 	help