Revert "TelephonyManager: hide NETWORK_TYPE_DCHSPAP"

This reverts commit 0803690e03c5f4ec070da9e7389a7411920460ec.

Conflicts:
	telephony/java/android/telephony/TelephonyManager.java

Change-Id: I97fe08b887ed833ae97d4c2a1dea6982b7a10199