arm64: rk3399: r4s: correct the LEDS label name

Correct the LEDS label name and remove the board type prefix,
which is actually unnecessary here, removes the redefined system status LED pin.

Signed-off-by: Xiaobo Tian <peterwillcn@gmail.com>
Reviewed-by: Kever Yang <kever.yang@rock-chips.com>
1 file changed