There doesn't seem to be much reason to use absolute paths to the
submodules, other than that it's not needed to change to the original
directory.
In preparation for CB:87824, make use of relative paths and change to
the original directory at the start of each iteration.
Change-Id: Ic74b589d933e6acd882fb9a09461bf7c01952a6f
Signed-off-by: Felix Singer <felixsinger@posteo.net>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/87823
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Matt DeVillier <matt.devillier@gmail.com>
7cbbf786cc