Bring back Camera widget option for tablets

Starting from ~2014-01-29, Camera widget is also shown on tablets.
That's actually a good thing, so let's bring back the option to
make it configurable.

Change-Id: I56f51b70eca4ef528dc91a13c658d33d43a90dec
Merge "Bring back Camera widget option for tablets" into cm-11.0
Merge branch 'cm-11.0' of git://github.com/CyanogenMod/android_packages_apps_Settings into cd-4.4