overlay: Enable Keyguard camera widget on tablets

* AOSP said no camera for tablet users :( but we are CM

Change-Id: I2227d894a315a6b8c6f14d799250c7c4159ccfa4
Merge "overlay: Enable Keyguard camera widget on tablets" into cm-11.0
Merge branch 'cm-11.0' of git://github.com/CyanogenMod/android_vendor_cm into cd-4.4