CEC: Do not switch language if the new one is same as the old one

Do not switch language if the new language is the same as
the current one. This helps avoid accidental country variant
switching such as from en_US to en_AU due to the limitation of CEC.

Bug: 22373619
Change-Id: Ia98aff67e37b470b3f550a5c097e8140c1a51ecf
1 file changed