Improve x86 long divide

Implement inline division for literal and variable divisors.  Use the
general case for dividing by a literal by using a double length multiply
by the appropriate constant with fixups.  This is the Hacker's Delight
algorithm.

Change-Id: I563c250f99d89fca5ff8bcbf13de74de13815cfe
Signed-off-by: Mark Mendell <mark.p.mendell@intel.com>