uboot-phytec

sniper: Get rid of reset_misc

There is no need to set the reboot mode to a particular value prior to reboot,
since valid values will have been caught and cleared earlier.

In addition, this breaks the reboot-bootloader fastboot call, by overriding the
required value for fastboot.

Signed-off-by: Paul Kocialkowski <contact@paulk.fr>
Reviewed-by: Tom Rini <trini@konsulko.com>