drm/i915: inline enable/disable_irq into ring->get/put_irq
drm/i915: inline enable/disable_irq into ring->get/put_irq

Now that these are properly refactored this additional indirection
doesn't really buy us anything but confusion. Hence inline them.

This duplicates the ironlake gt enable/disable code snippet, but we've
already separate ilk from gen6+ gt irq in i915_irq.c, so I think this
makes more sense.

Reviewed-by: Eric Anholt <96f164ad4d9b2b0dacf8ebee2bb1eeb3aa69adf1@anholt.net>
Signed-Off-by: Daniel Vetter <c1b6782c4af8f0673da8923a0702a1832e5940f4@ffwll.ch>

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