dts: arm: stm32u5 serie has a vbat internal on ADC1 and ADC4
Add the  has-vbat-channel property to ADC1 and ADC4 of the stm32U5
status = "disabled";
vref-mv = <3300>;
#io-channel-cells = <1>;
+ has-vbat-channel;
has-temp-channel;
has-vref-channel;
};
interrupts = <113 0>;
status = "disabled";
#io-channel-cells = <1>;
+ has-vbat-channel;
has-temp-channel;
has-vref-channel;
};
