These callbacks are only called in the syscore suspend/resume code on
interrupt chips which have been registered via the generic irq chip
mechanism. Calling those callbacks per irq would be rather icky, but
with the generic irq chip mechanism we can call this per registered
chip.
Signed-off-by: NThomas Gleixner <tglx@linutronix.de>
Cc: linux-arm-kernel@lists.infradead.org

Implement a generic interrupt chip, which is configurable and is able
to handle the most common irq chip implementations.
Signed-off-by: NThomas Gleixner <tglx@linutronix.de>
Cc: linux-arm-kernel@lists.infradead.org
Tested-by: NH Hartley Sweeten <hsweeten@visionengravers.com>
Tested-by: NTony Lindgren <tony@atomide.com>
Tested-by; Kevin Hilman <khilman@ti.com>