dts: common: nordic: nrf7120: rename hfxo to hfxo64m

The node label hfxo is assumed to be a 32 MHz oscillator on previous SoC
families. To avoid inconsistency, the 64 MHz hfxo node was renamed to
hfxo64m.

Signed-off-by: Rafał Kuźnia <[email protected]>

Author: e-rk

dts/common/nordic/nrf7120_enga.dtsi

@@ -55,7 +55,7 @@
 			clock-frequency = <32768>;
 		};
 
-		hfxo: hfxo64m {
+		hfxo64m: hfxo64m {
 			compatible = "fixed-clock";
 			#clock-cells = <0>;
 			clock-frequency = <DT_FREQ_M(64)>;