tridentfb: coding style improvement

This patch contains coding style improvements to the tridentfb driver (white
spaces, indentations, long lines).

It also moves fb_ops structure after fb api functions are defined.
Signed-off-by: NKrzysztof Helt <krzysztof.h1@wp.pl>
Signed-off-by: NAntonino Daplas <adaplas@gmail.com>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>