Change Regulatory Info Activity to prefer string over image

Change-Id: I9ea5c2bf469af8f654ec4e4bb4f2a8a5738e6a95
SuperSU header
[2/2] Profile: Screen timeout
[2/2] Buttons: Immersive mode
[2/2] Quick pulldown: center
[2/2] Smart pulldown
[2/2] Volume panel timeout
[2/2] Battery light: Quiet hours & 100% charged
[2/2] Low battery warning policy
[2/2] Network traffic indicator
[2/2] Floating window
[2/2] Lockscreen notifications