Bindings expect NAND controller node name to match certain patterns:

  socfpga_arria10_socdk_nand.dtb: nand@ffb90000: $nodename:0: 'nand@ffb90000' does not match '^nand-controller(@.*)?'
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: Dinh Nguyen <dinguyen@kernel.org>