kernel-version dependent checks in kconfig check
Two patches.
Add pmb.parse.version.check_string()
Compare a version against a check string. This will be used in "pmbootstrap kconfig check", to only require certain options if the pkgver is in a specified range.
kconfig check: properly test UEVENT_HELPER, LBDAF
Add check for UEVENT_HELPER for kernels >= 4.0.0. Change LBDAF check to be only required for kernels <5.2.0. Adjust the config format and checking code to support such range specific checks.
Closes #1795 (closed)