- remove unneeded casts

- use framebuffer_alloc/framebuffer_release to allocate/free memory

- the pseudo_palette is always u32 regardless of bpp if using generic
  drawing functions
Signed-off-by: Antonino Daplas <adaplas@pol.net>
Acked-by: Paul Mundt <lethal@linux-sh.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>