phy: phy-rockchip-inno-usb2: improve error message

Printing the OF node is not useful, since we get the same information
from the device context. Instead print the reg address, that could
not be found.

Signed-off-by: Sebastian Reichel <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]
Signed-off-by: Vinod Koul <[e-mail]>

drivers/phy/rockchip/phy-rockchip-inno-usb2.c

···
 	} while (phy_cfgs[index].reg);
 
 	if (!rphy->phy_cfg) {
-		dev_err(dev, "no phy-config can be matched with %pOFn node\n",
-			np);
+		dev_err(dev, "could not find phy config for reg=0x%08x\n", reg);
 		return -EINVAL;
 	}