The version check was added due to dependency to

 a618c7f8 ACPICA: Add support for new SRAT subtable

Now, that this code is in the kernel, remove the check. This is esp.
useful to enable backports.
Signed-off-by: NRobert Richter <rrichter@cavium.com>
Signed-off-by: NMarc Zyngier <marc.zyngier@arm.com>