Add support for cortex-a55/cortex-a75.

Bug: 78133793
Bug: 78242072

Test: Builds and ran to verify best libc routines.
Change-Id: I2299b8f0f6379c9003072764978ea917b74aee4f
Merged-In: I2299b8f0f6379c9003072764978ea917b74aee4f
(cherry picked from commit 3162eb3b)