[FIX] interrupt checking from exception (for x86)

[FIX] interrupt checking from exception (for x86)

In LINUX_VERSION_CODE >= 4.0.0 exception handlers wrapped with ist_enter()
and ist_exit() where preempt_count is incremented and decremented, so we
cannot determine interruptable state.

Solution: mask HARDIRQ_OFFSET bit.

Change-Id: If961547e3221ec27157ebc0c993f2a7a3c0e8605
Signed-off-by: Vyacheslav Cherkashin <v.cherkashin@samsung.com>