power: qcom: smb5-lib: Update charging status for handling Qnovo

Currently, whenever the charging status register shows that the
charging is paused, charger driver shows it as not charging.
In case of Qnovo, this could be due to a momentary pause of
charging. Hence, read charging pause command register to see if
the charging pause is requested and update the charging status.

Change-Id: Ibbd9acf69a38d71f6970d2a86134b0f92853b8b5
Signed-off-by: Subbaraman Narayanamurthy <subbaram@codeaurora.org>