Add bswap_{16,32,64}p
Add bswap_{16,32,64}p

Add byte swap macros that take a pointer and byte swap
in place.

Signed-off-by: Anton Blanchard <14deb5e5e417133e888bf47bb6a3555c9bb7d81c@samba.org>
Signed-off-by: Nikunj A Dadhania <e2f4a5db9b4735182a88051d1e7a3599f9eac9db@linux.vnet.ibm.com>

qemu/SLOF,stefanberger/SLOF-tpm,qemu/SLOF,open-power-host-os/slof,agraf/SLOF,open-power-host-os/slof,open-power-host-os/slof,qemu/SLOF,open-power-host-os/slof,aik/SLOF,agraf/SLOF,stefanberger/SLOF-tpm,agraf/SLOF,stefanberger/SLOF-tpm,aik/SLOF,aik/SLOF,agraf/SLOF