Make sure we check that the right interrupt occurred before
calling the event handler for timer 1. Report spurious IRQs
as IRQ_NONE.
Cc: Cédric Le Goater <clg@xxxxxxxx>
Cc: Joel Stanley <joel@xxxxxxxxx>
Cc: Guenter Roeck <linux@xxxxxxxxxxxx>
Signed-off-by: Linus Walleij <linus.walleij@xxxxxxxxxx>