Support vddhdiv5 for saadc

Author: taruti

nrf-hal-common/src/saadc.rs

@@ -178,6 +178,8 @@ where
             7 => self.0.ch[0].pselp.write(|w| w.pselp().analog_input7()),
             #[cfg(not(feature = "9160"))]
             8 => self.0.ch[0].pselp.write(|w| w.pselp().vdd()),
+            #[cfg(not(feature = "9160"))]
+            13 => self.0.ch[0].pselp.write(|w| w.pselp().vddhdiv5()),
             // This can never happen the only analog pins have already been defined
             // PAY CLOSE ATTENTION TO ANY CHANGES TO THIS IMPL OR THE `channel_mappings!` MACRO
             _ => unsafe { unreachable_unchecked() },
@@ -265,3 +267,16 @@ impl Channel<Saadc> for InternalVdd {
 #[cfg(not(feature = "9160"))]
 /// Channel that doesn't sample a pin, but the internal VDD voltage.
 pub struct InternalVdd;
+
+#[cfg(not(feature = "9160"))]
+impl Channel<Saadc> for InternalVddHdiv5 {
+    type ID = u8;
+
+    fn channel() -> <Self as embedded_hal::adc::Channel<Saadc>>::ID {
+        13
+    }
+}
+
+#[cfg(not(feature = "9160"))]
+/// Channel that doesn't sample a pin, but the internal VDD voltage.
+pub struct InternalVddHdiv5;