ARM: 9130/1: mm: Provide die_kernel_fault() helper

ARM: 9130/1: mm: Provide die_kernel_fault() helper

Provide die_kernel_fault() helper to do the kernel fault reporting,
which with msg argument, it could report different message in different
scenes, and the later patch "ARM: mm: Fix PXN process with LPAE feature"
will use it.

Signed-off-by: Kefeng Wang <wangkefeng.wang@huawei.com>
Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
[backport of mainline commit 2e707106fac7f81f780d7c76770a726c46757a84]
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Seung-Woo Kim <sw0312.kim@samsung.com>
Change-Id: I4143a6323aef64f05752616f27361a2f92f33e8e