[klibc] m68k: add archsetjmp.h file

The m68k port still missed archsetjmp.h.

Signed-off-by: H. Peter Anvin <hpa@zytor.com>
diff --git a/usr/include/arch/m68k/klibc/archsetjmp.h b/usr/include/arch/m68k/klibc/archsetjmp.h
new file mode 100644
index 0000000..daf7898
--- /dev/null
+++ b/usr/include/arch/m68k/klibc/archsetjmp.h
@@ -0,0 +1,26 @@
+/*
+ * usr/include/arch/m68k/klibc/archsetjmp.h
+ */
+
+#ifndef _KLIBC_ARCHSETJMP_H
+#define _KLIBC_ARCHSETJMP_H
+
+struct __jmp_buf {
+	unsigned int __d2;
+	unsigned int __d3;
+	unsigned int __d4;
+	unsigned int __d5;
+	unsigned int __d6;
+	unsigned int __d7;
+	unsigned int __a2;
+	unsigned int __a3;
+	unsigned int __a4;
+	unsigned int __a5;
+	unsigned int __fp; /* a6 */
+	unsigned int __sp; /* a7 */
+	unsigned int __retaddr;
+};
+
+typedef struct __jmp_buf jmp_buf[1];
+
+#endif /* _KLBIC_ARCHSETJMP_H */