Multi boot image EMMC- Android-ok Ubuntu-ok EXTSD- LibreELEC OS-false

[balbes150]

[Request] U-Boot with ext4 capabilities

It is advisable to add description of reset commands ENV in the default state to the page with the description of the update for the boot loader. http://docs.khadas.com/develop/UBootUsage/ These commands are different from the previous cases that are used in the documentation for the official Amlogic buildroot. By the way, I checked the updated boot loader (built-in function multi-boot) on the branches of Vim and ubuntu. Everything works. If these changes to include in the regular version of u…