x86: asm-x86/msr.h: pull in linux/types.h

Since the msr.h header uses types like __u32, it should pull in linux/types.h.

[ mingo@elte.hu: affects user-space that includes this header. We dont
  actually like user-space including raw kernel headers but it's a
  longstanding practice and it's easy for the kernel to be nice about
  this. ]
Signed-off-by: NMike Frysinger <vapier@gentoo.org>
Signed-off-by: NThomas Gleixner <tglx@linutronix.de>
Signed-off-by: NIngo Molnar <mingo@elte.hu>

include/asm-x86/msr.h

@@ -3,6 +3,10 @@
 
 #include <asm/msr-index.h>
 
+#ifndef __ASSEMBLY__
+# include <linux/types.h>
+#endif
+
 #ifdef __i386__
 
 #ifdef __KERNEL__