[OE-core] Kernel check of PV versus kernel source

[Philip Balister]

This check seems to have gone in recently and doesn't appear to work
very well.

ERROR: linux-xlnx-3.14-xilinx+gitAUTOINC+2b48a8aeea-r0
do_kernel_version_sanity_check: Package Version
(3.14-xilinx+gitAUTOINC+2b48a8aeea) does not match of kernel being built
(4.6). Please update the PV variable to match the kernel source.

I hunt around and the kernel source appears to be 3.14.2. Sometimes the
check passes, sometimes it asks for 3.14.2 actual PV is something like
3.14-xilinx+gitAUTOINC+2b48a8aeea-r0

Clearly, something isn't deterministic here.

Philip