payloads/filo: Update branch name from master to main

It seems like the default branch for FILO was renamed from 'master' to
'main'.

TEST: FILO builds correctly when selecting 'HEAD' for the FILO version
option.

Change-Id: I6c355d757987551e850f9d24f6bfb14167cb8046
Signed-off-by: Nicholas Chin <nic.c3.14@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/76101
Reviewed-by: Felix Singer <service+coreboot-gerrit@felixsinger.de>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Nico Huber <nico.h@gmx.de>

0 files changed, 0 insertions, 0 deletions