Reenable the new pass manager in hwasan builds.

Also remove a deprecated flag -fsanitize-hwaddress-abi=platform.

Switching to the new pass manager reduces size of the "lib64" directory
by almost 6%.

Bug: 135298400
Test: objdump -d path/to/symbols/system/lib64/*.so | grep __hwasan_check_
Test: adb shell sanitizer-status

Change-Id: I327ee982e20c02b3b2126d93189048d9f4bfb301