Add lttng 2.2.0 bbappend with ARM syscalls instrumentation patch for kernel 3.4

Bring up the commit from lttng master branch to version 2.2.0.
This patch updates ARM syscalls tracepoints to kernel version 3.4.

Signed-off-by: Andrew Gabbasov <andrew_gabbasov@mentor.com>
Merge pull request #18 from agabbasov/upd-lttng

Add lttng 2.2.0 bbappend with ARM syscalls instrumentation patch