configs: starfive_visionfive2: Set default fdt file to "jh7110-starfive-visionfive-2-v1.3b.dtb"
Change the default fdt file from "jh7110-visionfive-v2.dtb"
to "jh7110-starfive-visionfive-2-v1.3b.dtb", for sync with
linux mainline.
Signed-off-by: Hal Feng <hal.feng@starfivetech.com>