These are all moving to meta-extras. Ideally in the future machines
such as these will be maintained to topic specific layers as we move
to a more layer oriented model. If this causes a problem for anyone
please discuss it on the mailing list.

Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

In preparation for the more generic atom-pc, rename the netbook machine and all
the relevant overrides. Leave the linux-netbook kernel recipe intact and as the
default kernel for the atom-pc machine.  A future patch will convert this over
to linux-wrs and likely remove the linux-netbook kernel recipe.

Cc: Tom Zanussi <tom.zanussi@intel.com>
Cc: Bruce Ashfield <bruce.ashfield@windriver.com>
Signed-off-by: Darren Hart <dvhart@linux.intel.com>
Signed-off-by: Richard Purdie <rpurdie@linux.intel.com>