staging:omapdrm Fix typos in drivers:omapdrm

The below patch fixes some typos that I found while reading.  Note: I
was told to hold off sending anything until *rc1 so hopefully now its
alright.(wasnt sure what kernel *rc*)

Signed-off-by: Justin P. Mattock <justinmattock@gmail.com>
Reviewed-by: Rob Clark <rob@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>