linux-phytec-ti

dmaengine: ti: k3-udma: new workaround for packet mode rx

Instead of creating a temporary continuous buffer to do the transfer and
when it is finished copy the received data back to the client's sgl:

Create host buffer descriptors for each sg section and push them to fdr and
let UDMA to fill them and return the packet.

Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>