Staging: sm750fb: ddk750_swi2c.h: Shorten lines to under 80 characters

Shorten lines to under 80 characters in ddk750_swi2c.h
to rectify the following checkpatch warnings:
WARNING: line over 80 characters

Signed-off-by: Isaac Assegai <isaac.a.travers@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>