[M] Change in coreboot[main]: treewide: Move string.h to commonlib

[Maximilian Brune (Code Review)]

Attention is currently required from: Maximilian Brune.

Hello build bot (Jenkins),

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

https://review.coreboot.org/c/coreboot/+/79224?usp=email

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

The following approvals got outdated and were removed:
Verified-1 by build bot (Jenkins)

Change subject: treewide: Move string.h to commonlib
......................................................................

treewide: Move string.h to commonlib

This moves libpayloads string.h to commonlib/bsd/string.h and removes
all function declarations that are duplicate of coreboots GPL2 licensed
string.h and libpayloads string.h.
It also removes the long version of the BSD-3-Clause and instead uses
the SPDX short identifier.

Signed-off-by: Maximilian Brune 
Change-Id: Ifb05d70e474ad2dc9e5d4726363ce01c70699f7f
---
M payloads/libpayload/include/string.h
A src/commonlib/bsd/include/commonlib/bsd/string.h
M src/include/string.h
3 files changed, 34 insertions(+), 52 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/24/79224/2