[2/2] settings: add CPU info overlay

this shows
CPU temp (if available)
for every core governor + online + freq

Change-Id: I28c1e48c2e613b33c301b61cead70678ab6a2e9b

@alviteri: Switchialized

Conflicts:
	res/values/cr_strings.xml
	src/com/android/settings/DevelopmentSettings.java