drm: Fix warning with make xmldocs caused by drm_irq.c
drm: Fix warning with make xmldocs caused by drm_irq.c

This patch fix following warnings.

Warning(.//drivers/gpu/drm/drm_irq.c:1279): No description
found for parameter drm_crtc'
Warning(.//drivers/gpu/drm/drm_irq.c:1279): Excess function
parameter 'crtc' description in 'drm_crtc_vblank_reset'

Signed-off-by: Masanari Iida <f31bb8ac2957d045575b3081e813605474613a21@gmail.com>
Signed-off-by: Daniel Vetter <c1b6782c4af8f0673da8923a0702a1832e5940f4@ffwll.ch>

KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs