powerpc/eeh: Replace pr_warning() with pr_warn()

pr_warn() is equal to pr_warning(), but the former is a bit more
formal according to commit fc62f2f ("kernel.h: add pr_warn for
symmetry to dev_warn, netdev_warn").

The patch replaces pr_warning() with pr_warn().

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

diff --cc arch/powerpc/kernel/eeh.c
Simple merge

diff --cc arch/powerpc/kernel/eeh_cache.c
Simple merge

diff --cc arch/powerpc/kernel/eeh_dev.c
Simple merge

diff --cc arch/powerpc/kernel/eeh_driver.c
Simple merge

diff --cc arch/powerpc/kernel/eeh_pe.c
Simple merge

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

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

diff --cc arch/powerpc/platforms/pseries/eeh_pseries.c
Simple merge