power: smblite-lib: Force 5V on OTG enable

Add register write when OTG cable is detected to
ensure to override the adaptive voltage negotiation
algorithm and ensure boost VOUT will be 5V for OTG.

Change-Id: I6c143b31f095ebad92e58d1cd3c9ab3e872a2241
Signed-off-by: Kavya Nunna <knunna@codeaurora.org>