u-boot.inc: make sure all counter variables are properly unset
The script does "i == j" checks to retrieve the config <-> type pairs from
the UBOOT_MACHINE and UBOOT_CONFIG lists. This check however requires both
j and i to be initially unset. Ensure this by explicitely unsetting i.
This fixes broken u-boot SPL installations with SolidRun machines
(the SPL wasn't being installed and deployed.)
Signed-off-by: Carlos Rafael Giani <dv@pseudoterminal.org> Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
