Revert "Remove unneeded -Wno-constant-logical-operand flag"

This reverts commit 4f0ce757.

Reason for revert: Breaks several targets in internal git_master, e.g. http://ab/5165971.

Test: Build failing library
Change-Id: I02a5ade05a76b24020586c55a4e8f441ca7708a9