power: smb23x-charger: add retries for read/write operations

Reads/writes from SMB can fail during reload operation, add retries
in read/write operations to handle failures cases.
While at it, fix apsd_disabled handling and re-position irq/polling
workaround check.

CRs-Fixed: 997203
Change-Id: Ib7a28b85f4e9cc4e1f0b675d98e02be3b7e78b61
Signed-off-by: Ashay Jaiswal <ashayj@codeaurora.org>