Christian Poessinger dee033f97c Packages: use 'make kernelversion' instead of grep magic
Exract version by using the included "make kernelversion" instead of writing
a custom grep script that was used before.

  VERSION=$(grep '^VERSION' Makefile | grep -Eo '[0-9]{1,4}')
  PATCHLEVEL=$(grep '^PATCHLEVEL' Makefile | grep -Eo '[0-9]{1,4}')
  SUBLEVEL=$(grep '^SUBLEVEL' Makefile | grep -Eo '[0-9]{1,4}')

$ make kernelversion
4.19.36
2019-04-26 10:32:45 +02:00
..
2019-04-15 16:26:53 +02:00
2016-10-26 14:41:26 +09:00
2018-08-12 03:01:35 +07:00
2017-07-29 15:30:57 +09:00
2018-08-17 10:53:54 +02:00