From 36ae37e3436b0c7731ae15a03d9215ff24bef9f2 Mon Sep 17 00:00:00 2001
From: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Date: Fri, 28 Mar 2014 13:36:27 +1100
Subject: [PATCH] powerpc: Make boot_cpuid common between 32 and 64-bit

Move the definition to setup-common.c and set the init value
to -1 on both 32 and 64-bit (it was 0 on 64-bit).

Additionally add a check to prom.c to garantee that the init
value has been udpated after the DT scan.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
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