ARM: dts: vf610-zii-scu4-aib: Use generic names for DT nodes

The devicetree specification recommends using generic node names.

Some ZII dts files already follow such recommendation, but some don't,
so use generic node names for consistency among the ZII dts files.

Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
Cc: Shawn Guo <shawnguo@kernel.org>
Cc: Chris Healy <cphealy@gmail.com>
Cc: Cory Tusar <cory.tusar@zii.aero>
Cc: Fabio Estevam <festevam@gmail.com>
Cc: linux-arm-kernel@lists.infradead.org
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Shawn Guo <shawnguo@kernel.org>