Include missing headers for asm-generic/sections.h

asm-generic/sections.h references ulong but does not include
linux/types.h
Signed-off-by: NSean Anderson <seanga2@gmail.com>

include/asm-generic/sections.h

@@ -8,6 +8,8 @@
 #ifndef _ASM_GENERIC_SECTIONS_H_
 #define _ASM_GENERIC_SECTIONS_H_
 
+#include <linux/types.h>
+
 /* References to section boundaries */
 
 extern char _text[], _stext[], _etext[];