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: 2e8a5942f8 ("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>

arch/arm/mach-mvebu/coherency_ll.S

@@ -49,7 +49,7 @@ ENTRY(ll_get_cpuid)
 	and	r3, r3, #15
 	mov	r2, #(1 << 24)
 	lsl	r3, r2, r3
-ARM_BE8(rev	r1, r1)
+ARM_BE8(rev	r3, r3)
 	mov	pc, lr
 ENDPROC(ll_get_cpuid)