[coretelephony] Update for Xcode 12.1 GM (#9878)

src/coretelephony.cs

@@ -64,6 +64,14 @@ namespace CoreTelephony {
 
 		[Field ("CTRadioAccessTechnologyLTE")]
 		NSString LTE { get; }
+
+		[iOS (14,1)]
+		[Field ("CTRadioAccessTechnologyNRNSA")]
+		NSString NRNsa { get; }
+
+		[iOS (14,1)]
+		[Field ("CTRadioAccessTechnologyNR")]
+		NSString NR { get; }
 	}
 
 	interface ICTTelephonyNetworkInfoDelegate {}

tests/xtro-sharpie/iOS-CoreTelephony.ignore

@@ -10,6 +10,8 @@
 !unknown-field! CTRadioAccessTechnologyHSUPA bound
 !unknown-field! CTRadioAccessTechnologyLTE bound
 !unknown-field! CTRadioAccessTechnologyWCDMA bound
+!unknown-field! CTRadioAccessTechnologyNR bound
+!unknown-field! CTRadioAccessTechnologyNRNSA bound
 !unknown-field! CTServiceRadioAccessTechnologyDidChangeNotification bound
 !unknown-native-enum! CTCellularDataRestrictedState bound
 !unknown-native-enum! CTCellularPlanProvisioningAddPlanResult bound