Staging: emxx_udc: Add space around operator.

Add a space around '>>' operator.
Problem found using checkpatch.

Signed-off-by: Navya Sri Nizamkari <navyasri.tech@gmail.com>
Reviewed-by: Julia Lawall <julia.lawall@lip6.fr>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>