Staging: android: add ram_console driver

Doesn't quite link properly under all configurations, and it has way too
many different build options, but it's a start.

Signed-off-by: Arve Hjønnevåg <arve@android.com>
Signed-off-by: Brian Swetland <swetland@google.com>
Cc: Robert Love <rlove@google.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>