ASoC: wcd9xxx: Reset Tapan codec post adsp subsystem restart

Exercise codec reset as part of ADSP subsystem restart handling
and also update codec and ASoC cache registers to defaults. This
is required to clean up codec state post ADSP restart.

CRs-Fixed: 485962
Change-Id: If1574372adaeda5d3a4a015ee580dfba5b161a52
Signed-off-by: Ravishankar Sarawadi <crsaraw@codeaurora.org>