[PATCH] fixups for block2mtd

Fixes to block2mtd.c - the previous driver was only compile-tested:
o Corrected copyright statements and some comments.
o Renamed blockmtd to block2mtd.
o Fixed the newline handling, it oopsed the kernel if no erase size
  was passed.
o Replaced some printk() by INFO().
o Tried (but failed) to replace the readahead code.
Signed-off-by: Jörn Engel <joern@wohnheim.fh-wedel.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>