powerpc/powernv: Fix endianness problems in EEH

EEH information fetched from OPAL need fix before using in LE environment.
To be included in sparse's endian check, declare them as __beXX and
access them by accessors.

Cc: Gavin Shan <gwshan@linux.vnet.ibm.com>
Signed-off-by: Guo Chao <yan@linux.vnet.ibm.com>
Acked-by: Gavin Shan <gwshan@linux.vnet.ibm.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>

diff --cc arch/powerpc/include/asm/opal.h
Simple merge

diff --cc arch/powerpc/platforms/powernv/eeh-ioda.c
Simple merge

diff --cc arch/powerpc/platforms/powernv/pci.c
Simple merge