regulator: fan53555: Add i2c retry logic

The i2c-core may perform a bus recovery procedure if
the I2C lines are stuck low. In such a case the client
is expected to retry its i2c transaction. Add a mechanism
to perform multiple delayed retries in case of a I2C
transaction failure.

CRs-Fixed: 715354
Change-Id: I7ef83f1a633ed80830e52e8ccd7bb36144900093
Signed-off-by: Anirudh Ghayal <aghayal@codeaurora.org>