xtensa: Convert s6000 gpio irq_chip to new functions
xtensa: Convert s6000 gpio irq_chip to new functions

Also use proper wrappers for irq_desc access.

Signed-off-by: Thomas Gleixner <00e4cf8f46a57000a44449bf9dd8cbbcc209fd2a@linutronix.de>
Cc: Chris Zankel <711c73f64afdce07b7e38039a96d2224209e9a6c@zankel.net>
LKML-Reference: <550830a94b07a6baf5c59c98c52a2500cb9a547f@linutronix.de>

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