Frameworks/base: Correct Simplified Chinese Translations

The current translation refers to the radio as "收音机", which is the
common name for an FM radio receiver. Based the English strings
(And also based on how AOSP doesn't really have FM radio support),
it's actually referring to the wireless radio, which is translated as
"无线电" in Chinese.

Also submitted to AOSP:
https://android-review.googlesource.com/#/c/46240/

Change-Id: If9578ed285c02873805be2625a85ae8ddc042311