rename the guard #define from _MACHINE_MPLOCK_H_ to _POWERPC_MPLOCK_H_
rename the guard #define from _MACHINE_MPLOCK_H_ to _POWERPC_MPLOCK_H_

orumin/openbsd-efivars,orumin/openbsd-efivars,orumin/openbsd-efivars,orumin/openbsd-efivars