ARM: mvebu: fix big endian booting after coherency code rework

ARM: mvebu: fix big endian booting after coherency code rework

As part of the introduction of the cpuidle support for Armada XP, the
coherency code was significantly reworked, especially in the
coherency_ll.S file. However, when the ll_get_cpuid function was
created, the big-endian specific code that switches the endianess of
the register was not updated properly.

This patch fixes this code, and therefore makes big endian systems
bootable again.

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Link: https://lkml.kernel.org/r/1400762882-10116-2-git-send-email-thomas.petazzoni@free-electrons.com
Fixes: 659a7096f623 ("ARM: mvebu: Split low level functions to manipulate HW coherency")
Reported-by: Kevin Hilman <khilman@linaro.org>
Cc: Kevin Hilman <khilman@linaro.org>
Acked-by: Gregory CLEMENT <gregory.clement@free-electrons.com>
Signed-off-by: Jason Cooper <jason@lakedaemon.net>