phy: cadence: sierra: Don't spam console

use dev_dbg() instead of dev_info() for debug related
prints.

Get's rid of below print from console.

"cdns,sierra serdes@5030000: sierra probed"

Signed-off-by: Roger Quadros <rogerq@kernel.org>
diff --git a/drivers/phy/cadence/phy-cadence-sierra.c b/drivers/phy/cadence/phy-cadence-sierra.c
index f5e23f3..2c9d5a1 100644
--- a/drivers/phy/cadence/phy-cadence-sierra.c
+++ b/drivers/phy/cadence/phy-cadence-sierra.c
@@ -1126,7 +1126,7 @@
 
 	sp->autoconf = dev_read_bool(dev, "cdns,autoconf");
 
-	dev_info(dev, "sierra probed\n");
+	dev_dbg(dev, "sierra probed\n");
 	return 0;
 
 clk_disable: