staging: dream: smd: remove all smd related code

Part of this code is already in my MSM tree. I'll move the rest
forward through my tree also.

Signed-off-by: Daniel Walker <dwalker@codeaurora.org>
CC: Pavel Machek <pavel@ucw.cz>
CC: linux-arm-msm@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>