power: smb5-lib: Fix SBUx resistance measurement in moisture detection

Liquid presence is decided by SBUx resistance measured lower than
certain threshold. However, the measurement can be distorted if done
right after Type-C removal because SBUx may not be completely
released. As a result, moisture can be falsely detected.

Fix it by delaying moisture detection 1s after Type-C cable removal.

CRs-Fixed: 2325898
Change-Id: I4f932f53792c38434c76cfaec2e29b8f91e78927
Signed-off-by: Harry Yang <harryy@codeaurora.org>