x86/cpu: Keep model defines sorted by model number

x86/cpu: Keep model defines sorted by model number

For better maintenance keep it sorted by numeric model ID. Add new lines to
seperate model groups.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Link: http://lkml.kernel.org/r/20170316155045.50389-1-andriy.shevchenko@linux.intel.com
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>