irq: Export handle_fasteoi_irq

irq: Export handle_fasteoi_irq

Export handle_fasteoi_irq to be able to use it in e.g. the Zynq gpio driver
since commit 6dd859508336 ("gpio: zynq: Fix IRQ handlers").

This fixes the following link issue:

  ERROR: "handle_fasteoi_irq" [drivers/gpio/gpio-zynq.ko] undefined!

Signed-off-by: Vincent Stehlé <[email protected]>
Acked-by: Arnd Bergmann <[email protected]>
Cc: [email protected]
Cc: Vincent Stehle <[email protected]>
Cc: Lars-Peter Clausen <[email protected]>
Cc: Linus Walleij <[email protected]>
Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: Thomas Gleixner <[email protected]>