boards: nordic: nrf7120dk: enable audiopll

Enable audiopll (required by PDM and TDM) and setup frequency.

Signed-off-by: David Jewsbury <[email protected]>

Author: Hi-Im-David

boards/nordic/nrf7120pdk/nrf7120_cpuapp_common.dtsi

@@ -184,6 +184,11 @@
 	status = "okay";
 };
 
+&audio_auxpll {
+	nordic,frequency = <NRF_AUXPLL_FREQ_DIV_AUDIO_48K>;
+	status = "okay";
+};
+
 &cpuapp_bellboard {
 	status = "okay";
 };