spi: dt-bindings: add Amlogic A113L2 SFC

The Flash Controller is derived by adding an SPI path to the original
raw NAND controller. This controller supports two modes: raw mode and
SPI mode. The raw mode has already been implemented in the community,
and the SPI mode is described here.

Add bindings for Amlogic A113L2 SPI Flash Controller.

Signed-off-by: Feng Chen <feng.chen@amlogic.com>
Reviewed-by: Conor Dooley <conor.dooley@microchip.com>
Signed-off-by: Xianwei Zhao <xianwei.zhao@amlogic.com>
Link: https://patch.msgid.link/20250910-spifc-v6-1-1574aa9baebd@amlogic.com


Signed-off-by: Mark Brown <broonie@kernel.org>