librem5-devkit: Enable CONFIG_ARM_IMX_CPUFREQ_DT
requested to merge martin.kepplinger/linux-next:imx8-5.3-rc1-devkit_enable_cpufreq into imx8-5.3-rc1-devkit
This is gets enabled here
but for some reason doesn't end up in this tree.
Signed-off-by: Guido Günther guido.gunther@puri.sm