buildroot

uclibc: ARC: Support syscall ABI v4

When used with GCC 6 ABIv4 is used.
Missing this patch leads to numerous runtime errors.

The patch has already been accepted in uclibc-ng:
http://cgit.uclibc-ng.org/cgi/cgit/uclibc-ng.git/commit/?id=3e40f9669279f005f7154892539166f5081fbcb2

So the patch should be removed after update to a new version of uclibc-ng.

Signed-off-by: Vlad Zakharov <vzakhar@synopsys.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>