sparc: add include guards to kernel.h

Signed-off-by: NSam Ravnborg <sam@ravnborg.org>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

arch/sparc/kernel/kernel.h

+#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 @@ extern void handle_hw_divzero(struct pt_regs *regs, unsigned long pc,
 /* muldiv.c */
 extern int do_user_muldiv (struct pt_regs *, unsigned long);
 #else /* CONFIG_SPARC32 */
-#endif
+#endif /* CONFIG_SPARC32 */
+#endif /* !(__SPARC_KERNEL_H) */