power: smb1351-charger: Increase the HVDCP detection delay

With HVDCP 3.0 enabled SMB1351 needs additional delay to detect
the adapter type, so increase the detection delay to 3.5 seconds.
While at it, force HVDCP 2.0 only if we detect a DCP adapter.

CRs-Fixed: 1033609
Change-Id: Ibc9b5bc1be5edc6d0e23ed6184b0ac4d075f0719
Signed-off-by: Anirudh Ghayal <aghayal@codeaurora.org>