Allow enabling -Wreorder-init-list from Android.bp.

I want to make this warning an error in my project and the
current setup is preventing me from doing so.

This has to be -Wno-error=reorder-init-list and not
-Wno-reorder-init-list because the later is overridden by some
modules explicitly enabling warning sets. -Wno-* flags are
overridden by -W* flags coming later in the command line,
but -Wno-error=* flags are only overridden by later -Werror=
flags.

Bug: 145210666
Test: presubmit
Change-Id: Ia08f8a20da37cdc57167324b0cd19413d8786990