mfd: pm8xxx-misc: add pm8xxx_usb_id_pullup API

PM8921 family provides a pullup enable bit to support USB ID.
Add the API for such support.

Change-Id: Id3056af070080c1c12f27720020ae718fc6f34f6
Signed-off-by: Willie Ruan <wruan@codeaurora.org>
2 files changed