usb: composite: Draw 900mA on USB resume if speed is super-speed

Per USB 3.1 specification, USB device can draw upto 900mA when
enumerated in super-speed mode and bus is resumed. Fix bug that is
requesting 500mA when bus is resumed when bus is operating in
super-speed mode.

CRs-Fixed: 1063393
Change-Id: I585f4c560f0920d3cb56cce009297b5665abb42e
Signed-off-by: Mayank Rana <mrana@codeaurora.org>