U-Boot with enabled secure-boot will not boot images with the
@-character used for hash node-names.
Use the existing separation character configurable for each device.
Signed-off-by: David Bauer <mail@david-bauer.net>
The mkits.sh script help message states hash algorithm can be
specified using the -H command-line option, but it does not work
currently due to a bug in the script.
This patch fixes this problem by changing the option from -S to
-H and specify getopts parameter after it
Signed-off-by: Yonghyu Ban <yonghyu@empo.im>