jlink: Output libjaylink version

Output the package version of libjaylink to ease debugging.

Change-Id: I3b9da6d046d140ba850056c98e67bed22c885ee0
Signed-off-by: Marc Schink <openocd-dev@marcschink.de>
Reviewed-on: http://openocd.zylin.com/3887
Tested-by: jenkins
Reviewed-by: Paul Fertser <fercerpav@gmail.com>

src/jtag/drivers/jlink.c

@@ -545,6 +545,9 @@ static int jlink_init(void)
 	enum jaylink_usb_address address;
 	size_t length;
 
+	LOG_DEBUG("Using libjaylink %s (compiled with %s).",
+		jaylink_version_package_get_string(), JAYLINK_VERSION_PACKAGE_STRING);
+
 	ret = jaylink_init(&jayctx);
 
 	if (ret != JAYLINK_OK) {