dt-bindings: dma: qcom,gpi: Document the Eliza GPI DMA engine

dt-bindings: dma: qcom,gpi: Document the Eliza GPI DMA engine

Document the GPI DMA engine found on the Eliza SoC.

It is fully compatible with the GPI DMA engine found on SM6350,
thus using qcom,sm6350-gpi-dma as fallback compatible.

Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@oss.qualcomm.com>
Signed-off-by: Abel Vesa <abel.vesa@oss.qualcomm.com>
Reviewed-by: Pankaj Patil <pankaj.patil@oss.qualcomm.com>
Link: https://patch.msgid.link/20260515-eliza-gpi-dma-v2-1-1255b43d5ca9@oss.qualcomm.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>