Nfc : Switch to notification sound

Use the notification sound, since the service might get unbound
before the sound has had a chance to finish

This fixes the issue where on beam completes, the notification sound
is cancelled before it finishes.

Change-Id: I6c00f43ed17dc7fadf27da58e3f95f540be8d22e
Merge "Nfc : Switch to notification sound" into cm-11.0
NFC polling mode (1/3)

Change-Id: I775b1d94a60ae916d5bf5b9fdb2bfdea5ed29408

Conflicts:
	src/com/android/nfc/NfcService.java