[source] firmware-utils: mktplinkfw2: add missing options descriptions

[LEDE Commits]

pepe2k pushed a commit to source.git, branch master:
https://git.lede-project.org/3b7928cc9d1ca215ba62ca5e2ce1cca211755c06

commit 3b7928cc9d1ca215ba62ca5e2ce1cca211755c06
Author: Piotr Dymacz <pepe2k at gmail.com>
AuthorDate: Tue Jul 4 13:26:40 2017 +0200

    firmware-utils: mktplinkfw2: add missing options descriptions
    
    Signed-off-by: Piotr Dymacz <pepe2k at gmail.com>
---
 tools/firmware-utils/src/mktplinkfw2.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/tools/firmware-utils/src/mktplinkfw2.c b/tools/firmware-utils/src/mktplinkfw2.c
index f1a76ad..fbf1f0d 100644
--- a/tools/firmware-utils/src/mktplinkfw2.c
+++ b/tools/firmware-utils/src/mktplinkfw2.c
@@ -303,6 +303,7 @@ static void usage(int status)
 "Options:\n"
 "  -B <board>      create image for the board specified with <board>\n"
 "  -c              use combined kernel image\n"
+"  -e              swap endianness in kernel load address and entry point\n"
 "  -E <ep>         overwrite kernel entry point with <ep> (hexval prefixed with 0x)\n"
 "  -L <la>         overwrite kernel load address with <la> (hexval prefixed with 0x)\n"
 "  -H <hwid>       use hardware id specified with <hwid>\n"
@@ -316,6 +317,8 @@ static void usage(int status)
 "  -o <file>       write output to the file <file>\n"
 "  -s              strip padding from the end of the image\n"
 "  -j              add jffs2 end-of-filesystem markers\n"
+"  -N <vendor>     set image vendor to <vendor>\n"
+"  -T <version>    set header version to <version>\n"
 "  -V <version>    set image version to <version>\n"
 "  -v <version>    set firmware version to <version>\n"
 "  -y <version>    set secondary version to <version>\n"