Add the Serial Flash Controller and it's pincontrols.
Signed-off-by: Alex Bee <knaerzche@gmail.com>
Link: https://lore.kernel.org/r/20240606143401.32454-7-knaerzche@gmail.com
[reference HCLK_SFC by its numeric id to prevent conflicts with the
 clock binding/controller changes]
Signed-off-by: Heiko Stuebner <heiko@sntech.de>