Change radio application icon to the commonly used "radio waves"
instead of a microphone to avoid confusion with the use of the
microphone icon in the settings and homescreen applications for
voice input related things.
Bug-AGL: SPEC-2981
Signed-off-by: Scott Murray <scott.murray@konsulko.com>
Change-Id: Ia40b5c3d72b6708b6918e7958da7c1e66ef9308b