sunxi: Enable a second mmc socket as boot target in the environment
Some sunxi-based boards (such as the Olimex A20-SOM-EVB) have a second MMC socket. This socket is not bootable hardware-wise, i.e. u-boot itself cannot be loaded from it, but once u-boot has started, the second socket can be used in the boot process provided by config_distro_bootcmd.h. If a second MMC socket is present, place it in the boot order after the first MMC socket. Signed-off-by: NKarsten Merker <merker@debian.org> Reviewed-by: NHans de Goede <hdegoede@redhat.com> Signed-off-by: NHans de Goede <hdegoede@redhat.com>
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