iw: event: add the missing time display format in the "iw event" help menu
The option used to print the events with timestamp in Human readable format
is not listed in the "$ iw event -h" output.
$ ./iw event -h
Usage: ./iw [options] event [-t|-r] [-f] [-n]
...
So add "-T" option to the help menu.
$ ./iw event -h
Usage: ./iw [options] event [-t|-T|-r] [-f] [-n]
...
Signed-off-by: Gokul Sivakumar <gokulkumar792@gmail.com>
Link: https://lore.kernel.org/r/20210910141618.1594617-3-gokulkumar792@gmail.com
Signed-off-by: Johannes Berg <johannes.berg@intel.com>