This file was protected by _PPC64_LMB_H, which is confusing, as the
32-bit code also uses the lmb these days.  Changed to
_ASM_POWERPC_LMB_H.
Signed-off-by: NBecky Bruce <becky.bruce@freescale.com>
Signed-off-by: NPaul Mackerras <paulus@samba.org>