Along the lines of d6c585a4, add IRQF_TIMER
flag for all timer interrupts  This ensures that timer interrupts won't be
disabled on suspend and not threaded for PREEMPT_RT.
Signed-off-by: NWu Zhangjin <wuzhangjin@gmail.com>
Acked-by: NThomas Gleixner <tglx@linutronix.de>
Signed-off-by: NRalf Baechle <ralf@linux-mips.org>