With PIE mode interrupts now emulated in generic code via an hrtimer,
no one calls rtc_class_ops->irq_set_state(), so this patch removes it
along with driver implementations.
CC: Thomas Gleixner <tglx@linutronix.de> CC: Alessandro Zummo <a.zummo@towertech.it> CC: Marcelo Roberto Jimenez <mroberto@cpti.cetuc.puc-rio.br> CC: rtc-linux@googlegroups.com Signed-off-by: John Stultz <john.stultz@linaro.org>