power: smb5-lib: Enable USB_IN 10mA current sink

There are certain charger Type-C insertion use cases in which SMB5
fails to detect a legacy cable.

As a SW workaround,  when boost is enabled or USB is put in suspend
mode, SW should turn off the 10mA current sink otherwise boost
efficiency or USB suspend spec will be violated. Conversely
when other use cases are excited, re-enable the 10mA current sink.

Change-Id: I2e0db74345134b3282853ddf7e4ea10848ae172d
Signed-off-by: Harry Yang <harryy@codeaurora.org>