ARM: tegra: apalis t30: fix device tree compatible node

Working on sound support I noticed the Apalis T30 Evaluation board
device tree missing the more generic Apalis T30 compatible string.

Signed-off-by: Marcel Ziswiler <marcel@ziswiler.com>
Signed-off-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Olof Johansson <olof@lixom.net>