power: supply: qti_battery_charger: allow setting ICL for USB_PD charger

USB driver can request for an ICL override (e.g. 2 mA when the
host enters suspend) when the device is connected to the host to
a SDP or a port that supports USB_PD. With USB_PD, if PDO 1 has
bit 28 set to 1, it advertises that suspend is supported. Hence
allow setting ICL for USB_PD charger as well.

Change-Id: I5a9eea05c58a7c8140c2910be97788f7f63efb05
Signed-off-by: Subbaraman Narayanamurthy <subbaram@codeaurora.org>