ARM: dts: meson: add node for SPIFC

This adds a node for the SPI Flash Controller to the Amlogic Meson
DTS.

Signed-off-by: Beniamino Galvani <[e-mail]>
Signed-off-by: Carlo Caione <[e-mail]>
Acked-by: Mark Brown <[e-mail]>

arch/arm/boot/dts/meson.dtsi

···
 			interrupts = <0 15 1>;
 			status = "disabled";
 		};
+
+		spifc: spi@c1108c80 {
+			compatible = "amlogic,meson6-spifc";
+			reg = <0xc1108c80 0x80>;
+			#address-cells = <1>;
+			#size-cells = <0>;
+			clocks = <&clk81>;
+			status = "disabled";
+		};
 	};
 }; /* end of / */