usb: composite: Return status zero if remote wakeup is not supported

Currently composite driver is calling get_status for the function
drivers which supports remote wakeup capability. Instead of this
have another judgement to check whether the device is advertising
remote wakeup capability.

Change-Id: I6e907b2a05ea64e04aa50ee90c4eb53b86b027d4
Signed-off-by: Pratham Pratap <prathampratap@codeaurora.org>