arm64: kaslr: fix breakage with CONFIG_MODVERSIONS=y

As it turns out, the KASLR code breaks CONFIG_MODVERSIONS, since the
kcrctab has an absolute address field that is relocated at runtime
when the kernel offset is randomized.

This has been fixed already for PowerPC in the past, so simply wire up
the existing code dealing with this issue.

Change-Id: Ib01e32f2c5cd3d6feff6321a897ed8d276bc3be3
Cc: <stable@vger.kernel.org>
Fixes: f80fb3a3d508 ("arm64: add support for kernel ASLR")
Tested-by: Timur Tabi <timur@codeaurora.org>
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Git-commit: 9c0e83c371cf4696926c95f9c8c77cd6ea803426
Git-repo: git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git


Signed-off-by: Runmin Wang <runminw@codeaurora.org>