sh: Tidy compiler warnings for SH-2A build.

Signed-off-by: NPaul Mundt <lethal@linux-sh.org>

arch/sh/kernel/signal.c

@@ -23,6 +23,7 @@
 #include <linux/personality.h>
 #include <linux/binfmts.h>
 #include <linux/freezer.h>
+#include <linux/io.h>
 #include <asm/system.h>
 #include <asm/ucontext.h>
 #include <asm/uaccess.h>

arch/sh/kernel/traps.c

@@ -642,7 +642,6 @@ asmlinkage void do_divide_error(unsigned long r4, unsigned long r5,
 				unsigned long r6, unsigned long r7,
 				struct pt_regs __regs)
 {
-	struct pt_regs *regs = RELOC_HIDE(&__regs, 0);
 	siginfo_t info;
 
 	switch (r4) {