rhine-common: re-enable "Eject SD card" option

Needed after http://review.cyanogenmod.org/62708/

Change-Id: I74a2084fa545001280318f98ad41c33901a3c04d
rhine: reconcile ril with mainline

Change-Id: I33d8bae7c143729cd64fb2d461942ddc87e7ad8f