Change in coreboot[master]: lib: Add ASan support to romstage on x86 arch

[Harshit Sharma (Code Review)]

Hello build bot (Jenkins), Patrick Georgi, Martin Roth, Angel Pons, Julius Werner, Werner Zeh,

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

https://review.coreboot.org/c/coreboot/+/43604

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

Change subject: lib: Add ASan support to romstage on x86 arch
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lib: Add ASan support to romstage on x86 arch

This patch adds ASan support to romstage on x86 architecture.
A Kconfig option is added to enable ASan in romstage. Compiler
flags are updated. A memory space representing the shadow region
is reserved in linker section. And a function call to asan_init()
is added to initialize shadow region when romstage loads.

Change-Id: I67ebfb5e8d602e865b1f5c874860861ae4e54381
Signed-off-by: Harshit Sharma 
---
M src/Kconfig
M src/arch/x86/assembly_entry.S
M src/arch/x86/car.ld
M src/include/symbols.h
M src/lib/Makefile.inc
M src/lib/asan.c
6 files changed, 64 insertions(+), 9 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/04/43604/8