usb: core: Add support to skip extended bus resume delay

By default skip_extended_resume_delay module parameter
allows to skip extra 40ms delay upon usb bus resume.
This delay was added on top of host bus resume which
is driven for 20ms. Skipping extra delay reduces over
all bus resume latency.

Change-Id: I31a83abc057c345f29d204a63e7571b880678e69
Signed-off-by: Hemant Kumar <hemantk@codeaurora.org>