The former is deprecated in favor of nvmem-layout. In preparation for
eventual removal from the kernel, do so here.
Some of these are leftovers from nvmem-layout conversion.
Signed-off-by: Rosen Penev <rosenp@gmail.com>
Link: https://github.com/openwrt/openwrt/pull/16097
Signed-off-by: Robert Marko <robimarko@gmail.com>