arm: meson: change trace level for phy errors managed by uclass

As the error message is now displayed by generic phy functions,
the pr_err can be change to pr_debug.

Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>
Acked-by: Neil Armstrong <narmstrong@baylibre.com>
diff --git a/arch/arm/mach-meson/board-gx.c b/arch/arm/mach-meson/board-gx.c
index c4cc11f..b4fde46 100644
--- a/arch/arm/mach-meson/board-gx.c
+++ b/arch/arm/mach-meson/board-gx.c
@@ -196,8 +196,8 @@
 	for (i = 0; i < 2; i++) {
 		ret = generic_phy_init(&usb_phys[i]);
 		if (ret) {
-			pr_err("Can't init USB PHY%d for %s\n",
-			       i, ofnode_get_name(dwc2_node));
+			pr_debug("Can't init USB PHY%d for %s\n",
+				 i, ofnode_get_name(dwc2_node));
 			return ret;
 		}
 	}
@@ -205,8 +205,8 @@
 	for (i = 0; i < 2; i++) {
 		ret = generic_phy_power_on(&usb_phys[i]);
 		if (ret) {
-			pr_err("Can't power USB PHY%d for %s\n",
-			       i, ofnode_get_name(dwc2_node));
+			pr_debug("Can't power USB PHY%d for %s\n",
+				 i, ofnode_get_name(dwc2_node));
 			return ret;
 		}
 	}