dt-bindings: dmaengine: zynqmp_dma: add xlnx,bus-width required property

xlnx,bus-width is a required property. In yaml conversion somehow
it got missed out. Bring it back and mention it in required list.
Also add Harini and myself to the maintainer list.

Fixes: 5a04982 ("dt-bindings: dmaengine: zynqmp_dma: convert to yaml")
Signed-off-by: Radhey Shyam Pandey <radhey.shyam.pandey@amd.com>
Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Reviewed-by: Michael Tretter <m.tretter@pengutronix.de>
Reviewed-by: Peter Korsgaard <peter@korsgaard.com>
Link: https://lore.kernel.org/r/1695216326-3841352-1-git-send-email-radhey.shyam.pandey@amd.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>

Author: Radhey Shyam Pandey

Documentation/devicetree/bindings/dma/xilinx/xlnx,zynqmp-dma-1.0.yaml

@@ -13,6 +13,8 @@ description: |
 
 maintainers:
   - Michael Tretter <m.tretter@pengutronix.de>
+  - Harini Katakam <harini.katakam@amd.com>
+  - Radhey Shyam Pandey <radhey.shyam.pandey@amd.com>
 
 allOf:
   - $ref: ../dma-controller.yaml#
@@ -65,6 +67,7 @@ required:
   - interrupts
   - clocks
   - clock-names
+  - xlnx,bus-width
 
 additionalProperties: false