Add MFC DT node and reserve memory node for MFC usage.

Cc: <linux-fsd@tesla.com>
Signed-off-by: Smitha T Murthy <smithatmurthy@gmail.com>
Signed-off-by: Aakarsh Jain <aakarsh.jain@samsung.com>
Link: https://lore.kernel.org/r/20231206063045.97234-12-aakarsh.jain@samsung.comSigned-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>