This patch adds usage of MTRR registers and two new options: noaccel and
nomtrr.

[bunk@kernel.org: make pm3fb_init() static again]
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>