arm64: dts: agilex: align pl330 node name with dtschema

Fixes dtbs_check warnings like:

  pdma@ffda0000: $nodename:0: 'pdma@ffda0000' does not match '^dma-controller(@.*)?$'

Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
Signed-off-by: Dinh Nguyen <dinguyen@kernel.org>