usb: host: pehci: Add USB core changes needed by PEHCI

A user can initiate host compliance tests or suspend/resume
requests over the ISP1763A USB Host controller by issuing
IOCTLs on the pehci device.
Add necessary changes in USB core to support these requests.
These changes are taken from the 1.0.6.0 version of ST-E pehci
driver present at: http://www.box.net/shared/static/o5esh7r14q.zip


along with the fixes for checkpatch errors and removal of unused
variables.

Change-Id: Ic6b175bcd3104730bac90278456e3bfbcd507801
Signed-off-by: Manu Gautam <mgautam@codeaurora.org>