ASoC: wcd9335: fix mute issue on headphone during concurrency

Currently class-H controller is not enabled when lineout is enabled
first and then headphone is enabled.  Because of this mute is observed
on headphone during lineout and headphone concurrent scenarios.
Fix mute on headphone by enabling class H block during concurrency.

Change-Id: Ibed962eaacf87c3eb55c569d2ae9c6363a63cace
Signed-off-by: Vidyakumar Athota <vathota@codeaurora.org>
CRs-Fixed: 957405