x86: section mismatch fix

Fix this:

WARNING: vmlinux.o(.text+0x114bb): Section mismatch in reference from
the function nopat() to the function .cpuinit.text:pat_disable()
The function nopat() references
the function __cpuinit pat_disable().
This is often because nopat lacks a __cpuinit
annotation or the annotation of pat_disable is wrong.

Reported-by: "Fabio Comolli" <[e-mail]>
Cc: Sam Ravnborg <[e-mail]>
Signed-off-by: Ingo Molnar <[e-mail]>

arch/x86/mm/pat.c

···
 	printk(KERN_INFO "%s\n", reason);
 }
 
-static int nopat(char *str)
+static int __init nopat(char *str)
 {
 	pat_disable("PAT support disabled.");
 	return 0;