Commit 05d73a2a73 enabled GPIO on ethernet LED, but proper LED setup was
not added then. This commit fixes it by reverting the change on the LED.
Fixes: 05d73a2a73 ("ar71xx: Arduino Yun board 'WLAN RST' button support")
Signed-off-by: Sungbo Eo <mans0n@gorani.run>
a5e404d192