plutux/rootfs: Add missing build dependency

Since we use the squashfs tools from build-tools directory, we need to make
sure that we have the tools.

Change-Id: I87597047fb2a5332e13c21b686f89f9430f95cee
Signed-off-by: Soeren Grunewald <soeren.grunewald@avionic-design.de>
Reviewed-on: http://review.adnet.avionic-design.de/690
Reviewed-by: Dirk Leber <dirk.leber@avionic-design.de>
plutux/initrd: Add -ng suffix on tamonten-ng

When running on a dual-core system it must be tegra 2, so if we have more
than two cores, we can assume to run on tegra 3 and append the -ng.

Change-Id: I40dc4a719e5c39ca75335e40ba45d60f083267d2
Signed-off-by: Soeren Grunewald <soeren.grunewald@avionic-design.de>
Reviewed-on: http://review.adnet.avionic-design.de/691
Reviewed-by: Dirk Leber <dirk.leber@avionic-design.de>
plutux/rootfs: Add a simple openbox menu config

The default menu contains a lot of programs we do not provides. So strip down
the menu to a minimal setup we can safely provide.

Change-Id: I0fdbd85437196f9eaa4cebf1c700b4ce98cb4f76
Signed-off-by: Soeren Grunewald <soeren.grunewald@avionic-design.de>
Reviewed-on: http://review.adnet.avionic-design.de/682
Reviewed-by: Alban Bedel <alban.bedel@avionic-design.de>
tec/rootfs: Change password to match documentation

The documentation for TEC-NG development kit contains a password to be used
for the platform, which is currently not set.

Change-Id: Iad3f591854c880718cf1406b1f4a9242d1ef7794
Signed-off-by: Soeren Grunewald <soeren.grunewald@avionic-design.de>
Reviewed-on: http://review.adnet.avionic-design.de/715
Reviewed-by: Julian Scheel <julian.scheel@avionic-design.de>