linux-headers: arc: add patch that adds PTRATE_GET_THREAD_AREA

Signed-off-by: Anton Kolesov <Anton.Kolesov@synopsys.com>
DON'T MERGE: qt: fix compilation on ARC (missing "__sync_add_and_fetch_4")

Required only for current TLS/NPTL-enabled toolchain.
With stock 4.8-R3 toolchain just add "-matomic" to CXXFLAGS instead.

Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com>
qt: add support for ARC architecture

Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com>