Add HAVE_IRQ_EXIT_ON_IRQ_STACK kernel configuration symbol that was missed during backporting separate IRQ stack for MIPS from upstream. Signed-off-by: Sergey Ryazanov <ryazanov.s.a@gmail.com>
Copy and refresh patches and config from 4.4 Signed-off-by: Sergey Ryazanov <ryazanov.s.a@gmail.com>