staging: fbtft: Reformat long macro definitions

Multiple macro definitions crossing 80 character line length makes them
hard to understand. Reformatting the these lines makes the code more
readable and easier to understand. Issue flagged by checkpatch script.

Signed-off-by: Deepak R Varma <mh12gx2825@gmail.com>
Link: https://lore.kernel.org/r/b8d2fc0f55339830694ee51860cc970ce1b9cae4.1584314604.git.mh12gx2825@gmail.com


Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>