dt-bindings: riscv: spacemit: add deepcomputing,fml13v05

dt-bindings: riscv: spacemit: add deepcomputing,fml13v05

Document the compatible string for the Deepcomputing fml13v05.
It's based on the SpacemiT K3 RISC-V SoC and is designed for the Framework
Laptop 13 Chassis, which has (Framework) SKU FRANHQ0001.

Acked-by: Conor Dooley <conor.dooley@microchip.com>
Signed-off-by: Sandie Cao <sandie.cao@deepcomputing.io>
Reviewed-by: Troy Mitchell <troy.mitchell@linux.spacemit.com>
Reviewed-by: Yixun Lan <dlan@kernel.org>
Link: https://lore.kernel.org/r/20260421064200.1582367-1-sandie.cao@deepcomputing.io
Signed-off-by: Yixun Lan <dlan@kernel.org>