Set additional variables (boot_targets, devtype, devnum, bootpart) to
emulate config_distro_bootcmd.h so that the debian-installer
bootscript will work.
Gbp-Pq: Topic wandboard
Gbp-Pq: Name emulate-config_distro_bootcmd-standardization.diff
#define CONFIG_BOOTCOMMAND \
"mmc dev ${mmcdev};" \
+ "setenv boot_targets mmc ; " \
+ "setenv devtype mmc ; " \
+ "setenv devnum ${mmcdev} ; " \
+ "setenv bootpart ${mmcpart} ; " \
"if mmc rescan; then " \
"echo SD/MMC found on device ${mmcdev};" \
"if run loadbootenv; then " \