ARM: dts: NSP: MX65: add qca8k falling-edge, PLL properties

This patch enables two properties for the QCA8337 switches on the MX65.

Set the SGMII transmit clock to falling edge
"qca,sgmii-txclk-falling-edge" to conform to the OEM configuration [1].

The new explicit PLL enable option "qca,sgmii-enable-pll" is required
[2].

[1] https://git.kernel.org/netdev/net-next/c/6c43809bf1be
[2] https://git.kernel.org/netdev/net-next/c/bbc4799e8bb6Signed-off-by: Matthew Hagan <mnhagan88@gmail.com>
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>

arch/arm/boot/dts/bcm958625-meraki-alamo.dtsi

@@ -118,6 +118,8 @@ port@0 {
 						reg = <0>;
 						ethernet = <&sgmii1>;
 						phy-mode = "sgmii";
+						qca,sgmii-enable-pll;
+						qca,sgmii-txclk-falling-edge;
 						fixed-link {
 							speed = <1000>;
 							full-duplex;
@@ -194,6 +196,8 @@ port@0 {
 						reg = <0>;
 						ethernet = <&sgmii0>;
 						phy-mode = "sgmii";
+						qca,sgmii-enable-pll;
+						qca,sgmii-txclk-falling-edge;
 						fixed-link {
 							speed = <1000>;
 							full-duplex;