A few mxsfb patches

[Shawn Guo]

The patches came from the work of adding framebuffer for mx28evk and
mx23evk boards.  They are all minor changes.

 [PATCH 1/3] video: mxsfb: smarten the code a little bit
 [PATCH 2/3] video: mxsfb: fix the incorrect error checking for alloc_pages_exact
 [PATCH 3/3] video: mxsfb: add DOTCLK polarity configuration support

 arch/arm/mach-mxs/include/mach/mxsfb.h |    3 ++-
 drivers/video/mxsfb.c                  |   25 ++++++++++++++-----------
 2 files changed, 16 insertions(+), 12 deletions(-)

Regards,
Shawn