[S] Change in coreboot[main]: libpayload: Fix the stack and data labels

[Yi Chou (Code Review)]

Attention is currently required from: Julius Werner, Yi Chou, Yu-Ping Wu.

Hello Julius Werner, Yu-Ping Wu, build bot (Jenkins),

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

https://review.coreboot.org/c/coreboot/+/79144?usp=email

to look at the new patch set (#8).

The following approvals got outdated and were removed:
Code-Review+2 by Julius Werner, Code-Review+2 by Yu-Ping Wu, Verified+1 by build bot (Jenkins)

Change subject: libpayload: Fix the stack and data labels
......................................................................

libpayload: Fix the stack and data labels

We should make sure _stack/_estack and the other labels are consistent.
And _data & _edata is also useful to clean up the sensitive data on the
data section.

BUG=b:248610274
TEST=emerge-cherry libpayload
BRANCH=none

Cq-Depend: chromium:5052462
Change-Id: I589040f4db60b35813ea9f4ba9503244bd7def00
Signed-off-by: Yi Chou 
---
M payloads/libpayload/arch/arm/head.S
M payloads/libpayload/arch/arm/libpayload.ldscript
M payloads/libpayload/arch/arm64/head.S
M payloads/libpayload/arch/arm64/libpayload.ldscript
M payloads/libpayload/arch/x86/head.S
M payloads/libpayload/arch/x86/libpayload.ldscript
6 files changed, 33 insertions(+), 15 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/44/79144/8