Enforce RROs for all the build-time ROs

This CL is to generate every static RRO package for its target package
automatically at build-time.

BOARD_ENFORCE_RRO build variable is added to specify whether enforcing
RRO is required or not.

BOARD_ENFORCE_RRO_EXEMPT_SOURCES build variable is added to specify
the module list of which item should be exempt from enforcing RRO.

Test: tested on bullhead and sailfish
Bug: 34097942
Change-Id: I455b2ce34e66c57a540c299b5e378b7c4e78d5b8