This patch fixes some of the drivers' fb_blank() implementation which got
the usage of the VESA_* constants incorrectly and converts them to use the
new FB_BLANK-* constants.

I'm not sure if what I did is correct for all drivers, so maintainers,
please review.

(Note: For most of the drivers, FB_BLANK_NORMAL is treated as
FB_BLANK_UNBLANK, but returns a nonzero so fbcon will do a soft_blank).
Signed-off-by: Antonino Daplas <adaplas@pol.net>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>