Fixes dtbs_check warnings like:

  pdma@ffda0000: $nodename:0: 'pdma@ffda0000' does not match '^dma-controller(@.*)?$'
Signed-off-by: NKrzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
Signed-off-by: NDinh Nguyen <dinguyen@kernel.org>