core/combo: Remove --icf=safe from linker flags

Change-Id: I702022b3525c960682211a024a89a6f13ba0d2cb
build: Add auditd to SELinux builds

Change-Id: I54717edbeb9677e53bdd01e6519edd30c387bfe8
build: cleanup CPU specific optimizations

Change-Id: I571e50d8e4a7f98ddb8758a9bc8bde4cbb2c4911