editors/lazarus: add powerpc64* support
- Mk/Uses/fpc.mk needs the same treatment as aarch64 since there's no
stable fpc for powerpc64* yet.
- editors/lazarus/Makefile needs FPC_DEVELSUFFIX for RUN_DEPENDS and
adding powerpc64-freebsd target to ${WRKSRC}/lcl/interfaces/*/Makefile.