arm64: dts: ti: k3-j721e-common-proc-board: Re-name "link" name as "phy"

Commit 66db854b ("arm64: dts: ti: k3-j721e-common-proc-board:
Configure the PCIe instances") and
commit 02c35dca ("arm64: dts: ti: k3-j721e: Enable Super-Speed
support for USB0") added PHY DT nodes with node name as "link"
However nodes with #phy-cells should be named 'phy' as discussed in [1].
Re-name subnodes of serdes in J721E to 'phy'.

[1] -> http://lore.kernel.org/r/20200909203631.GA3026331@bogus

Fixes: 66db854b ("arm64: dts: ti: k3-j721e-common-proc-board: Configure the PCIe instances")
Fixes: 02c35dca ("arm64: dts: ti: k3-j721e: Enable Super-Speed support for USB0")
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
Reviewed-by: Aswath Govindraju <a-govindraju@ti.com>
Signed-off-by: Nishanth Menon <nm@ti.com>
Link: https://lore.kernel.org/r/20210603143427.28735-5-kishon@ti.com

arch/arm64/boot/dts/ti/k3-j721e-common-proc-board.dts

@@ -359,7 +359,7 @@ &serdes_wiz3 {
 };
 
 &serdes3 {
-	serdes3_usb_link: link@0 {
+	serdes3_usb_link: phy@0 {
 		reg = <0>;
 		cdns,num-lanes = <2>;
 		#phy-cells = <0>;
@@ -674,7 +674,7 @@ &serdes0 {
 	assigned-clocks = <&serdes0 CDNS_SIERRA_PLL_CMNLC>;
 	assigned-clock-parents = <&wiz0_pll1_refclk>;
 
-	serdes0_pcie_link: link@0 {
+	serdes0_pcie_link: phy@0 {
 		reg = <0>;
 		cdns,num-lanes = <1>;
 		#phy-cells = <0>;
@@ -687,7 +687,7 @@ &serdes1 {
 	assigned-clocks = <&serdes1 CDNS_SIERRA_PLL_CMNLC>;
 	assigned-clock-parents = <&wiz1_pll1_refclk>;
 
-	serdes1_pcie_link: link@0 {
+	serdes1_pcie_link: phy@0 {
 		reg = <0>;
 		cdns,num-lanes = <2>;
 		#phy-cells = <0>;
@@ -700,7 +700,7 @@ &serdes2 {
 	assigned-clocks = <&serdes2 CDNS_SIERRA_PLL_CMNLC>;
 	assigned-clock-parents = <&wiz2_pll1_refclk>;
 
-	serdes2_pcie_link: link@0 {
+	serdes2_pcie_link: phy@0 {
 		reg = <0>;
 		cdns,num-lanes = <2>;
 		#phy-cells = <0>;