dt: bcm6858: add hsspi controller

This commit add a hsspi controller in the bcm6858 device tree.
Signed-off-by: NPhilippe Reynes <philippe.reynes@softathome.com>
Reviewed-by: NKursad Oney <kursad.oney@broadcom.com>

arch/arm/dts/bcm6858.dtsi

@@ -10,6 +10,10 @@
 	#address-cells = <2>;
 	#size-cells = <2>;
 
+	aliases {
+		spi0 = &hsspi;
+	};
+
 	cpus {
 		#address-cells = <2>;
 		#size-cells = <0>;
@@ -67,6 +71,14 @@
 			u-boot,dm-pre-reloc;
 		};
 
+		hsspi_pll: hsspi-pll {
+			compatible = "fixed-factor-clock";
+			#clock-cells = <0>;
+			clocks = <&periph_osc>;
+			clock-mult = <2>;
+			clock-div = <1>;
+		};
+
 		refclk50mhz: refclk50mhz {
 			compatible = "fixed-clock";
 			#clock-cells = <0>;
@@ -192,6 +204,19 @@
 			status = "disabled";
 		};
 
+		hsspi: spi-controller@ff801000 {
+			compatible = "brcm,bcm6328-hsspi";
+			#address-cells = <1>;
+			#size-cells = <0>;
+			reg = <0x0 0xff801000 0x0 0x600>;
+			clocks = <&hsspi_pll>, <&hsspi_pll>;
+			clock-names = "hsspi", "pll";
+			spi-max-frequency = <100000000>;
+			num-cs = <8>;
+
+			status = "disabled";
+		};
+
 		nand: nand-controller@ff801800 {
 			compatible = "brcm,nand-bcm6858",
 				     "brcm,brcmnand-v5.0",