x86/intel-mid: Make intel_mid_ops static

The following warning is issued on unfixed code.

arch/x86/platform/intel-mid/intel-mid.c:64:22: warning: symbol 'intel_mid_ops' was not declared. Should it be static?
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Link: http://lkml.kernel.org/r/1444400741-98669-1-git-send-email-andriy.shevchenko@linux.intel.comSigned-off-by: Thomas Gleixner <tglx@linutronix.de>

arch/x86/platform/intel-mid/intel-mid.c

@@ -61,7 +61,7 @@
 enum intel_mid_timer_options intel_mid_timer_options;
 
 /* intel_mid_ops to store sub arch ops */
-struct intel_mid_ops *intel_mid_ops;
+static struct intel_mid_ops *intel_mid_ops;
 /* getter function for sub arch ops*/
 static void *(*get_intel_mid_ops[])(void) = INTEL_MID_OPS_INIT;
 enum intel_mid_cpu_type __intel_mid_cpu_chip;