omap4-common: update common_ota_from_target_files to fix build

This updates common_ota_from_target_files to stay in sync with the
version from build/. Doing so fixes the build-failure caused by
the new option "--override_prop".

Change-Id: I3a7d4ab9093b44be950250d7e28b0cb68cf00ea0
Merge branch 'cm' into HEAD