[Mono.Android] Fix methods using Android.Telephony.Data.* enums (#6535)

Fixes: #6527

Several methods in [`android.telephony.data.ApnSetting`][0] and
[`android.telephony.data.ApnSetting.Builder`][1] have been mapped to
enums that do not exist, such as `Android.Telephony.ApnType`.

These enums are actually in the `Android.Telephony.Data` namespace
and thus should be e.g. `Android.Telephony.Data.ApnType`.

Fixing these enum mappings allows the methods to be bound instead of
being invalidated for trying to reference non-existent types.

Once the enum mapping is corrected, the previously unbound methods
such as [`ApnSetting.Builder.setApnTypeBitmask()`][2] are bound:

![ILDasm output showing `ApnSetting.Builder.SetApnTypeBitmask()`][3]

[0]: https://developer.android.com/reference/android/telephony/data/ApnSetting
[1]: https://developer.android.com/reference/android/telephony/data/ApnSetting.Builder
[2]: https://developer.android.com/reference/android/telephony/data/ApnSetting.Builder#setApnTypeBitmask(int)
[3]: https://user-images.githubusercontent.com/179295/144113897-1de3a5a4-315f-47dc-b1a0-a2d3cd5a0bfd.png "ILDasm output showing `ApnSetting.Builder.SetApnTypeBitmask()`"

src/Mono.Android/methodmap.csv

@@ -2442,18 +2442,18 @@
 28, android.telecom, Connection, sendRttInitiationFailure, reason, Android.Telecom.RttSessionModifyResult
 28, android.telecom, ConnectionService, onHandoverFailed, error, Android.Telecom.HandoverFailureReason
 28, android.telephony, CellInfo, getCellConnectionStatus, return, Android.Telephony.CellConnectionStatus
-28, android.telephony.data, ApnSetting, getApnTypeBitmask, return, Android.Telephony.ApnType
-28, android.telephony.data, ApnSetting, getAuthType, return, Android.Telephony.AuthType
-28, android.telephony.data, ApnSetting, getMvnoType, return, Android.Telephony.MvnoType
+28, android.telephony.data, ApnSetting, getApnTypeBitmask, return, Android.Telephony.Data.ApnType
+28, android.telephony.data, ApnSetting, getAuthType, return, Android.Telephony.Data.AuthType
+28, android.telephony.data, ApnSetting, getMvnoType, return, Android.Telephony.Data.MvnoType
 28, android.telephony.data, ApnSetting, getNetworkTypeBitmask, return, Android.Telephony.NetworkType
-28, android.telephony.data, ApnSetting, getProtocol, return, Android.Telephony.Protocols
-28, android.telephony.data, ApnSetting, getRoamingProtocol, return, Android.Telephony.Protocols
-28, android.telephony.data, ApnSetting.Builder, setApnTypeBitmask, apnTypeBitmask, Android.Telephony.ApnType
-28, android.telephony.data, ApnSetting.Builder, setAuthType, authType, Android.Telephony.AuthType
-28, android.telephony.data, ApnSetting.Builder, setMvnoType, mvnoType, Android.Telephony.MvnoType
+28, android.telephony.data, ApnSetting, getProtocol, return, Android.Telephony.Data.Protocols
+28, android.telephony.data, ApnSetting, getRoamingProtocol, return, Android.Telephony.Data.Protocols
+28, android.telephony.data, ApnSetting.Builder, setApnTypeBitmask, apnTypeBitmask, Android.Telephony.Data.ApnType
+28, android.telephony.data, ApnSetting.Builder, setAuthType, authType, Android.Telephony.Data.AuthType
+28, android.telephony.data, ApnSetting.Builder, setMvnoType, mvnoType, Android.Telephony.Data.MvnoType
 28, android.telephony.data, ApnSetting.Builder, setNetworkTypeBitmask, networkTypeBitmask, Android.Telephony.NetworkType
-28, android.telephony.data, ApnSetting.Builder, setProtocol, protocol, Android.Telephony.Protocols
-28, android.telephony.data, ApnSetting.Builder, setRoamingProtocol, roamingProtocol, Android.Telephony.Protocols
+28, android.telephony.data, ApnSetting.Builder, setProtocol, protocol, Android.Telephony.Data.Protocols
+28, android.telephony.data, ApnSetting.Builder, setRoamingProtocol, roamingProtocol, Android.Telephony.Data.Protocols
 28, android.telephony, Call.Callback, onHandoverFailed, failureReason, Android.Telephony.HandoverFailureReason
 28, android.telephony.mbms, StreamingServiceCallback, onStreamMethodUpdated, methodType, Android.Telephony.StreamingMethod
 28, android.telephony.mbms, StreamingServiceCallback, onStreamStateUpdated, state, Android.Telephony.StreamingState