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

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

Change-Id: Iaf963927a33e0f8ca2c4ef26aa77dd85e752bfe6
Merge pull request #1 from CyanogenMod/cm-11.0

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