ASoC: msm8x16-wcd: Fix SSR mute on speaker for internal codec

When SSR triggered on speaker in internal codec,
sometimes dapm fails to mark dapm widget dirty after SSR
for specific clips and speaker codec widgets fail
to powerup. As this widget associated with SPK DAC register
which is also changed in driver when SSR power down and
powerup, resulting in timing issue when this register
being read by DAPM. Change the routing to tie up the
speaker codec widgets path with virtual mux switch
and DAC widgets.

Change-Id: I691fed56818a099dc3893eedad6fcd7f9bc61107
Signed-off-by: Laxminath Kasam <lkasam@codeaurora.org>