[klibc] Add missing include file <getopt.h>

Add <getopt.h>; previous checkin missed this header file.

Signed-off-by: H. Peter Anvin <hpa@zytor.com>
diff --git a/usr/include/getopt.h b/usr/include/getopt.h
new file mode 100644
index 0000000..71c41cd
--- /dev/null
+++ b/usr/include/getopt.h
@@ -0,0 +1,22 @@
+#ifndef _GETOPT_H
+#define _GETOPT_H
+
+#include <klibc/extern.h>
+
+struct option {
+	const char *name;
+	int has_arg;
+	int *flag;
+	int val;
+};
+
+enum {
+	no_argument	  = 0,
+	required_argument = 1,
+	optional_argument = 2,
+};
+
+__extern int getopt_long(int, char *const *, const char *,
+			 const struct option *, int *);
+
+#endif /* _GETOPT_H */