Run script with 'errexit' bash option to detect any errors from
subcommands.
It will fix situation where 'ddr_fw.bin' was missing but successfull
build created broken boot image. Post image script report this by:
cat: /home/user/buildroot/output/images/ddr_fw.bin: No such file or directory
and build finish with success.
Signed-off-by: Wojciech Nizinski <wojciech.nizinski@grinn-global.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
