ASoC: cs47l35: Fix EPOUT->HPOUT1 Mono Mux routing

EPOUT is always mono so should have a permanent routing through the
HPOUT1 Mono Mux.

Signed-off-by: Richard Fitzgerald <rf@opensource.cirrus.com>
Link: https://lore.kernel.org/r/20200925091830.7675-2-rf@opensource.cirrus.com


Signed-off-by: Mark Brown <broonie@kernel.org>