This patch adds an irqchip driver document for the Andestech Internal Vector
Interrupt Controller.
Signed-off-by: NRick Chen <rick@andestech.com>
Signed-off-by: NGreentime Hu <greentime@andestech.com>
Reviewed-by: NRob Herring <robh@kernel.org>
Acked-by: NArnd Bergmann <arnd@arndb.de>