tmc-etr: Call usb_qdss_open after all etr settings are done

As there is etr status check in usb notifier, call usb_qdss_open after
all etr settings are done to avoid the race condition between etr status
and usb notifier call.

Change-Id: Ib4b5ca8001ca135539e0d55cbb86cb061b564e9d
Signed-off-by: Mao Jinlong <jinlmao@codeaurora.org>