ASoC: wcd934x: donot reset codec state variables during SSR

During subsystem restart compander, hph_mode, class-h and svs
state variables are reset in post reset callback which results
mismatch between software and hardware states after SSR. Avoid
resetting of these variables to reflect HW state properly.

Change-Id: I3e9c805de31405c6edddcce70a8f314612ef9196
Signed-off-by: Vidyakumar Athota <vathota@codeaurora.org>