add a check to make sure no one uses width_bits on non-canonical type (#910)
add a check to make sure no one uses width_bits on non-canonical type (#910)


mbudiu-vmw/p4c-clone,p4lang/p4c,mbudiu-vmw/p4c-clone,p4lang/p4c,hanw/p4c,hanw/p4c,hanw/p4c,p4lang/p4c,p4lang/p4c,mbudiu-vmw/p4c-clone,hanw/p4c,mbudiu-vmw/p4c-clone,p4lang/p4c