[PATCH 0/1 v2] [SRU b, f, g, h/linux] Do not allow update-version-dkms to be run on a derivative kernel

[Tim Gardner]

[Impact]
It is too easy to run this script when working on a derivative kernel.

[Test Case]
Run this script in a derivative kernel. It will error out with an
appropriate error message.

[Potential regression]
Given that this fix enforces correct behavior and is run manually, there is zero chance
of regression.