hrtimer_plugin: handle name "timer"
hrtimer_plugin: handle name "timer"

On my machine the field is called just "timer", not "hrtimer",
so handle that (silently).

Signed-off-by: Johannes Berg <8398eb9892c5ab2ff439ca0b5e4b0706dd9ebef9@sipsolutions.net>

bigzz/trace-cmd,bigzz/trace-cmd