power: smb5: fix PD disable handling

PMI632 charger doesn't support USB PD, update
the APSD handling logic to ignore PD flow if PD is
not supported by PMIC.

Change-Id: I8e844bd2761514bc38d52de667574b61edc357d4
Signed-off-by: Ashay Jaiswal <ashayj@codeaurora.org>