lttng-modules and gcc-4.8 don't mix, according to the lttng ML
'current_thread_info() not respecting program order with gcc 4.8.x',
so remove it from arm builds.
(From OE-Core rev: ccf687de7b856dbe6f347956743f07ff05c2533a)
Signed-off-by: Tom Zanussi <tom.zanussi@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>