Ability to debug over Network (framework part)

Allow also the notification for ADB in tcp/ip mode
Add a new notification message when this mode is enabled.

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Note: This function can work without the Setting Part, its an official feature of adb.
But require this change in your device init.rc : http://review.cyanogenmod.com/6034

Settings Part : http://review.cyanogenmod.com/7141

Change-Id: I875a5ba5db10c949be2372db0e13768fe9cb3c1f