Convert the D1 devicetrees to use the new properties "riscv,isa-base" & "riscv,isa-extensions". For compatibility with other projects, "riscv,isa" remains. Acked-by: Jernej Skrabec <jernej.skrabec@gmail.com> Signed-off-by: Conor Dooley <conor.dooley@microchip.com> Link: https://lore.kernel.org/r/20231009-moonlight-gray-92debdc89f30@wendy Signed-off-by: Jernej Skrabec <jernej.skrabec@gmail.com>