MAINTAINERS: Add co-maintainer for drivers/irqchip

Thomas Gleixner has asked me to assist with the review and merging of
patches for the irqchip subsystem.

Signed-off-by: Jason Cooper <[email protected]>
Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: Thomas Gleixner <[email protected]>
1 file changed