USB Loader GX enable sd card mode by default

meta.xml

<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<app version="1">
	<name> USB Loader GX</name>
	<coder>USB Loader GX Team</coder>
	<version>3.0 r1281</version>
	<release_date>20230107233054</release_date>
	<arguments>
		<arg>--ios=249</arg>
		<arg>--bootios=58</arg>
		<arg>--usbport=0</arg>
		<arg>--mountusb=0</arg>
		<arg>--sdmode=1</arg>
	</arguments>
	<ahb_access/>
	<short_description>Loads games from USB-devices</short_description>
	<long_description>USB Loader GX is a libwiigui based USB iso loader with a wii-like GUI. You can install games to your HDDs and boot them with shorter loading times.</long_description>
</app>