sparc: add include guards to kernel.h

Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/arch/sparc/kernel/kernel.h b/arch/sparc/kernel/kernel.h
index 3fa8338..48e7037 100644
--- a/arch/sparc/kernel/kernel.h
+++ b/arch/sparc/kernel/kernel.h
@@ -1,3 +1,5 @@
+#ifndef __SPARC_KERNEL_H
+#define __SPARC_KERNEL_H
 /* cpu.c */
 extern const char *sparc_cpu_type;
 extern const char *sparc_fpu_type;
@@ -14,4 +16,5 @@
 /* muldiv.c */
 extern int do_user_muldiv (struct pt_regs *, unsigned long);
 #else /* CONFIG_SPARC32 */
-#endif
+#endif /* CONFIG_SPARC32 */
+#endif /* !(__SPARC_KERNEL_H) */