power: smb5: add minor fixes to SMB5 charger

Fix some minor bugs in charger driver:
- Return from OTG work if there is no change in OTG state.
- Update Power role mask.
- Skip AICL ADC configuration for PMI632.
- Fix OTG reporting via extcon.

Change-Id: I6afdd9bc63dc97c562a8c480be896114c295c578
Signed-off-by: Ashay Jaiswal <ashayj@codeaurora.org>