[S] Change in coreboot[master]: payloads/Memtest86Plus: Update branch name from master to main

[Nicholas Chin (Code Review)]

Attention is currently required from: Martin L Roth, Nicholas Chin, Stefan Reinauer.

Hello Felix Singer, Martin L Roth, Stefan Reinauer, build bot (Jenkins),

I'd like you to reexamine a change. Please visit

https://review.coreboot.org/c/coreboot/+/76100?usp=email

to look at the new patch set (#2).

Change subject: payloads/Memtest86Plus: Update branch name from master to main
......................................................................

payloads/Memtest86Plus: Update branch name from master to main

It seems like the default branch for coreboot's Memtest86+ fork was
renamed from 'master' to 'main'.

TEST: Memtest builds correctly when selecting 'Main' for the Memtest86+
version option.

Change-Id: I269249518019f5d0d12c57f1c14012abca86b48b
Signed-off-by: Nicholas Chin 
---
M payloads/external/Makefile.inc
M payloads/external/Memtest86Plus/Kconfig.secondary
M payloads/external/Memtest86Plus/Makefile
3 files changed, 8 insertions(+), 8 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/00/76100/2