x86/platform/intel/quark: Add printf attribute to imr_self_test_result()

__printf() attributes help detecting issues in printf() format strings at
compile time.

Even though imr_selftest.c is only compiled with
CONFIG_DEBUG_IMR_SELFTEST=y, GCC complains about a missing format
attribute when compiling allmodconfig with -Wmissing-format-attribute.

Silence this warning by adding the attribute.

Signed-off-by: Nicolas Iooss <[email protected]>
Acked-by: Bryan O'Donoghue <[email protected]>
Cc: Linus Torvalds <[email protected]>
Cc: Peter Zijlstra <[email protected]>
Cc: Thomas Gleixner <[email protected]>
Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: Ingo Molnar <[email protected]>

arch/x86/platform/intel-quark/imr_selftest.c

@@ -25,7 +25,8 @@
  * @fmt:	format string.
  * ...		variadic argument list.
  */
-static void __init imr_self_test_result(int res, const char *fmt, ...)
+static __printf(2, 3)
+void __init imr_self_test_result(int res, const char *fmt, ...)
 {
 	va_list vlist;