x86 headers: include linux/types.h

To properly pick up types relied on by prototypes like 'bool'.
Signed-off-by: NIngo Molnar <mingo@elte.hu>

arch/x86/include/asm/page.h

 #ifndef _ASM_X86_PAGE_H
 #define _ASM_X86_PAGE_H
 
+#include <linux/types.h>
+
 #ifdef __KERNEL__
 
 #include <asm/page_types.h>