ASoC: wcd937x: Fix headset record pop during SSR

Pop is heard with special headset with silence record
during SSR. Resolve pop by allowing sufficient time for
wcd937x_reset post SSR and again initialize registers
post SSR.

Change-Id: I80e70a98a72b247dca878673a30651647b676659
Signed-off-by: Vatsal Bucha <vbucha@codeaurora.org>