kdb_cpu_clr_watchpoint
int kdb_cpu_clr_watchpoint(vm_offset_t addr, vm_size_t size);
int kdb_cpu_clr_watchpoint(vm_offset_t addr, size_t size);
int kdb_cpu_clr_watchpoint(vm_offset_t addr, size_t size);
rc = kdb_cpu_clr_watchpoint((vm_offset_t)addr, (vm_size_t)size);
error = kdb_cpu_clr_watchpoint((vm_offset_t)addr,
int kdb_cpu_clr_watchpoint(vm_offset_t addr, vm_size_t size);