Introduce conditional for building

Only build this project when FP2_USE_APPOPS_SU is set to true when
building as userdebug. This mechanism allows for replacing of the
standard su binary with the one in this project, to allow for superuser
access by applications.

Issue: FP2P-458
Change-Id: Ia06dde5ceba1ca0afb651a60828e34714e0a1d5b
1 file changed