handle motorola user ids, if MOTOROLA_UIDS is defined

some of these are required by proprietary binary apps
and tools like lsof which report errors on unknown user 9000

A lot of projects use this android_filesystem_config.h,
so a global CFLAGS is better to handle this in BoardConfig.mk

Added latest ones for OSH (webtop) and whisper (used in pds)

Change-Id: I7e92bacfcac418cd9f21e67543a5789a292137a3