Skip memory limits under HWASan, same as ASan.

HWASan is a new memory tool with similar properties: it also has a
large sparse "shadow" mapping that makes RLIMIT_AS ineffective.

Bug: 112438058
Test: mmm SANITIZE_TARGET=hwaddress

Change-Id: Iec3dee890e9d5fbdc4fee5e7e59c58ee2b03a0bf