Defines starting with `v' in mach/ppc

• VM_MAX_ADDRESS mach/ppc/vm_param.h:42
• VM_MAX_KERNEL_ADDRESS mach/ppc/vm_param.h:51
• VM_MIN_ADDRESS mach/ppc/vm_param.h:41
• VM_MIN_KERNEL_ADDRESS mach/ppc/vm_param.h:50