irqchip: add to the directories part of the IRQ subsystem in MAINTAINERS
irqchip: add to the directories part of the IRQ subsystem in MAINTAINERS

Now that the drivers/irqchip/ directory is getting more code, it needs
a maintainer. The obvious maintainer for it is Thomas Gleixner, who is
maintaining the overall IRQ subsystem. So we add drivers/irqchip/ in
the list of directories that are part of the IRQ subsystem.

Signed-off-by: Thomas Petazzoni <a5d87d2bd7c424ee5cbdb4e978635bf653d5a005@free-electrons.com>
Reviewed-by: Rob Herring <aa00819e304141d872f2e4b1c4be422ea3abbfe1@calxeda.com>

TeamVee-Kanas/android_kernel_samsung_kanas,KristFoundation/Programs,KristFoundation/Programs,TeamVee-Kanas/android_kernel_samsung_kanas,KristFoundation/Programs,TeamVee-Kanas/android_kernel_samsung_kanas,KristFoundation/Programs,KristFoundation/Programs,TeamVee-Kanas/android_kernel_samsung_kanas,TeamVee-Kanas/android_kernel_samsung_kanas,KristFoundation/Programs