ARCv3 64 bit processors doesn't have Zero Delay Loop
(also named Zero Overhead Loop, ZOL) mechanism. Add kconfig
option to remove ZOL register save/restore so the code
can be build for both ARCv2 and ARCv3.
Signed-off-by: Eugeniy Paltsev <Eugeniy.Paltsev@synopsys.com>
Signed-off-by: Evgeniy Paltsev <PaltsevEvgeniy@gmail.com>