using '--single-branch' when cloning the tianocore repo
prevents the use of other branches/commits outside of the
checked-out coreboot_fb branch, so remove it.
Test: build with TIANOCORE_REVISION selected and revision
set to origin/master, verify checkout succeeds
Change-Id: If8c93aa87957ba2ff9ab7a58e84d2a25b48ec346
Signed-off-by: Matt DeVillier <matt.devillier@gmail.com>
Reviewed-on: https://review.coreboot.org/c/31686
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Nico Huber <nico.h@gmx.de>
ee69f73dbf