A variable cannot be both __read_mostly and const. This
is a meaningless combination.

Just make it only const.

This fixes the LTO build with numachip enabled.
Signed-off-by: NAndi Kleen <ak@linux.intel.com>
Link: http://lkml.kernel.org/r/1411533139-25708-1-git-send-email-andi@firstfloor.orgSigned-off-by: NThomas Gleixner <tglx@linutronix.de>