Code clean up.

Change-Id: Id669c2560515c4b8dffa5cacb6eecd0790713ae9
ODROID: Update: Add support ODROID-XU3 (v2.2)

Change-Id: I3c5df8c70518f546584ef6e08d0da895be190f15
ODROID: updater: Fix update failure when network is not connected.

This patch fixes the issue, failure updating with update.zip on local
storage when the network is disconnected.

Change-Id: Ia1d1e34a3a9afc8c0617335e73b4f9e8872c1eee