qpnp-qnovo: disable qnovo for dcin

Usually, DC path is connected to a wireless charger. It is advisable
to disable qnovo when charging wirelessly.
Disable qnovo for dc path unless a property in device tree is set to
specifically enable qnovo for dc path.

Change-Id: I4ca475f30ca0a564f533b4ed8bcd55cfb5da291f
Signed-off-by: Abhijeet Dharmapurikar <adharmap@codeaurora.org>