recipes-git: Use LIC_FILES_CHKSUM from .inc files

recipes-git: Use LIC_FILES_CHKSUM from .inc files

* the old checksum was introduced in .inc files in upgrade of
  tarball recipes to 5.3.0, use that until it's updated in
  git recipes and then we'll have to move old checksum from .inc
  to release recipe only.

(From meta-qt5 rev: 96c33dfbedacb94a216f7aede7d6d654a7d27953)

Signed-off-by: Martin Jansa <Martin.Jansa@gmail.com>
Signed-off-by: Patrick Ohly <patrick.ohly@intel.com>