dmaengine: dw-axi-dmac: Drop unused print message

Removed printing information which is not related to StarFive
platform.

Signed-off-by: Walker Chen <walker.chen@starfivetech.com>

drivers/dma/dw-axi-dmac/dw-axi-dmac-platform.c

@@ -522,7 +522,7 @@ static void dw_axi_dma_set_hw_channel(struct axi_dma_chan *chan, bool set)
 	unsigned long reg_value, val;
 
 	if (!chip->apb_regs) {
-		dev_err(chip->dev, "apb_regs not initialized\n");
+		dev_dbg(chip->dev, "apb_regs not initialized\n");
 		return;
 	}