video: includecheck fix: msm, mddi.c

fix the following 'make includecheck' warning:

  drivers/video/msm/mddi.c: linux/delay.h is included more than once.

Signed-off-by: Jaswinder Singh Rajput <jaswinderrajput@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>