Fix vmi.c compilation

Signed-off-by: Alexey Dobriyan <adobriyan@sw.ru>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

arch/i386/kernel/vmi.c

@@ -27,6 +27,7 @@
 #include <linux/bootmem.h>
 #include <linux/mm.h>
 #include <linux/highmem.h>
+#include <linux/sched.h>
 #include <asm/vmi.h>
 #include <asm/io.h>
 #include <asm/fixmap.h>