[coreboot-gerrit] Change in coreboot[master]: lib: Add ASan heap related functions

[Ahamed Husni (Code Review)]

Attention is currently required from: Werner Zeh, Harshit Sharma.
Ahamed Husni has posted comments on this change. ( https://review.coreboot.org/c/coreboot/+/51787 )

Change subject: lib: Add ASan heap related functions
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Patch Set 3:

(1 comment)

Patchset:

PS3: 
Hi,
I have added ASan support for Heap. This patch only adds redzones and poisons it when memory is allocated and unpoisons the redzones when memory is deallocated.

The internal data of the allocator (such as the allocation size, thread ID, etc.) is not stored in the left redzone yet.