Enable IF_AR3
Enable IF_AR3

Enable IF_AR3, which was incorrectly disabled in a previous checkin.

projedi/nasm,turingstudio/nasm,Distrotech/nasm,Distrotech/nasm,techkey/nasm,projedi/nasm,techkey/nasm,techkey/nasm,turingstudio/nasm,turingstudio/nasm,Distrotech/nasm,letolabs/nasm,projedi/nasm,letolabs/nasm,techkey/nasm,techkey/nasm,turingstudio/nasm,projedi/nasm,letolabs/nasm,projedi/nasm,Distrotech/nasm