machine-imx6: Change the PREFERRED_VERSION_linux-guf to 5.10.32
With the recent adaption it is possible to build the iMX6 based G&F platforms with the latest LTS kernel version 5.10.32.
Thus change the preferred Linux kernel version to 5.10.32. Use a weak assignment to be able to override this in the local.conf.
BCS 746-000295
Edited by Jonas Höppner