db/all.db: add more riscv64 boards
The FML13V01 board is already supported by upstream U-Boot and Linux.
The P550 board is described in: https://lore.kernel.org/all/20250616112316.3833343-8-pinkesh.vaghela@einfochips.com/
The FML13V01 board is already supported by upstream U-Boot and Linux.
The P550 board is described in: https://lore.kernel.org/all/20250616112316.3833343-8-pinkesh.vaghela@einfochips.com/