mmrnmhrm: Drop inode_cache mount option.

Signed-off-by: aszlig <aszlig@redmoonstudios.org>
machines: Add new configuration for 'tishtushi'.

At the moment, this configuration is only preliminary and we still need
to refine hardware configuration and of course the kernel configuration.

Signed-off-by: aszlig <aszlig@redmoonstudios.org>