Add CM Legal (1 of 2)

Allow defining a ro.cmlegal.url to for T&C and Privacy Policy

Change-Id: I45ffbdd9e472e258ed8c5a63dff0f3b9c7bc04e2
Merge "Add CM Legal (1 of 2)" into cm-11.0
Merge branch 'cm-11.0' of git://github.com/CyanogenMod/android_vendor_cm into cm-11.0