zte's code,first commit
Change-Id: I9a04da59e459a9bc0d67f101f700d9d7dc8d681b
diff --git a/ap/lib/libcurl/curl-7.54.1/docs/cmdline-opts/key.d b/ap/lib/libcurl/curl-7.54.1/docs/cmdline-opts/key.d
new file mode 100644
index 0000000..fbf583a
--- /dev/null
+++ b/ap/lib/libcurl/curl-7.54.1/docs/cmdline-opts/key.d
@@ -0,0 +1,10 @@
+Long: key
+Arg: <key>
+Protocols: TLS SSH
+Help: Private key file name
+---
+Private key file name. Allows you to provide your private key in this separate
+file. For SSH, if not specified, curl tries the following candidates in order:
+'~/.ssh/id_rsa', '~/.ssh/id_dsa', './id_rsa', './id_dsa'.
+
+If this option is used several times, the last one will be used.