sh: Rename opcode_t to insn_size_t.

This is now clashing with a driver, so just rename it.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
diff --git a/arch/sh/include/asm/kprobes.h b/arch/sh/include/asm/kprobes.h
index 613644a..036c331 100644
--- a/arch/sh/include/asm/kprobes.h
+++ b/arch/sh/include/asm/kprobes.h
@@ -6,7 +6,7 @@
 #include <linux/types.h>
 #include <linux/ptrace.h>
 
-typedef u16 kprobe_opcode_t;
+typedef insn_size_t kprobe_opcode_t;
 #define BREAKPOINT_INSTRUCTION	0xc33a
 
 #define MAX_INSN_SIZE 16