w83627hf: multiple fixes and enhancements in ASL include

w83627hf: multiple fixes and enhancements in ASL include

Fix multiple copy&paste errors and some other bugs in
devtree.asl. Redesign ENCM method to enter configuration mode
and set LDN by parameter. Reordered and commented some
statements to make the code a bit more readable. Add an ifdef
to enable never showing the keyboard controller as disabled,
which seems to cause bugs at least with some Linux kernels.
Remove keyboard controller IO regions from PS/2 mouse device
as e.g. Linux infers them from the keyboard controller device.

Change-Id: I44611339fabe31a8a584a3e6bd225082bfdd0b8e
Signed-off-by: Christoph Grenz <christophg+cb@grenz-bonn.de>
Reviewed-on: http://review.coreboot.org/357
Tested-by: build bot (Jenkins)
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>