Recent backport of NVMEM layout support as well as acommpanying OF changes
introduced a false #nvmem-cell-cells warning as #nvmem-cell-cells are
fully optional.
So, backport an upstream fix for this.
Fixes: 11759a5bf3 ("kernel: backport of changes & helpers")
Signed-off-by: Robert Marko <robimarko@gmail.com>
