ARC: mark accesses which are 32 bit despite of platform bittnes

Mark the places where we intentionally use st instead of STR for
code common for ARCv2 and ARCv3.

Signed-off-by: Eugeniy Paltsev <Eugeniy.Paltsev@synopsys.com>
Signed-off-by: Evgeniy Paltsev <PaltsevEvgeniy@gmail.com>
5 files changed