arm64: dts: visconti: tmpv7708-visrobo-vrb: Update the memory to 2GB

The tmpv7708-visrobo-vrb board has 2GB of memory. To use the maximum
memory, set the memory to 2GB.

Signed-off-by: Nobuhiro Iwa matsu <nobuhiro1.iwamatsu@toshiba.co.jp>
1 file changed