doc: Document Samsung Galaxy Ace 3 LTE

Author: user0-07161

Documentation/devices.md

@@ -189,6 +189,7 @@
 
 ### lk2nd-msm8960
 
+- Samsung Galaxy Ace 3 LTE (GT-S7275R) (display refresh doesn't work)
 - Samsung Galaxy Express (SGH-I437)
 - Samsung Galaxy S4 Mini (GT-I9195)
 - Sony Xperia SP (huashan) (quirky - see comment in `lk2nd/device/dts/msm8960/bundle.dts`)