MIPS: qi_lb60: Fix routing to audio amplifier

The ROUT (right channel output of audio codec) was connected to INL
(left channel of audio amplifier) instead of INR (right channel of audio
amplifier).

Fixes: 8ddebad1

 ("MIPS: qi_lb60: Migrate to devicetree")
Cc: stable@vger.kernel.org # v5.3
Signed-off-by: Paul Cercueil <paul@crapouillou.net>
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>