dmaengine: ti: k3-psil-am62: Update PSIL thread for saul.

Correct the RX PSIL thread for sa3ul.

Signed-off-by: Jayesh Choudhary <j-choudhary@ti.com>
Fixes: 5ac6bfb5 ("dmaengine: ti: k3-psil: Add AM62x PSIL and PDMA data")
Link: https://lore.kernel.org/r/20220421065323.16378-1-j-choudhary@ti.com


Signed-off-by: Vinod Koul <vkoul@kernel.org>