[MTE] [gnu make] Add memtag_globals as a sanitizer target.

GNU make bits for https://android-review.git.corp.google.com/c/platform/build/soong/+/2625692.

Bug: N/A
Test: Build {libc, libm, libc++, libm, and libnetd} in internal master
with these patches and an experimental compiler with the lld support.
Also, `SANITIZE_TARGET=memtag_globals m` here with in-tree compiler
without lld support.

Change-Id: I44c239ba907a90a355c46e12afbbbe96bb2e4426