[POWERPC] 4xx: Add L2 cache node to AMCC Taishan dts file

This patch adds the L2 cache node to the Taishan 440GX dts file.
Signed-off-by: NStefan Roese <sr@denx.de>
Signed-off-by: NJosh Boyer <jwboyer@linux.vnet.ibm.com>

arch/powerpc/boot/dts/taishan.dts

@@ -104,6 +104,16 @@
 		// FIXME: anything else?
 	};
 
+	L2C0: l2c {
+		compatible = "ibm,l2-cache-440gx", "ibm,l2-cache";
+		dcr-reg = <20 8			/* Internal SRAM DCR's */
+			   30 8>;		/* L2 cache DCR's */
+		cache-line-size = <20>;		/* 32 bytes */
+		cache-size = <40000>;		/* L2, 256K */
+		interrupt-parent = <&UIC2>;
+		interrupts = <17 1>;
+	};
+
 	plb {
 		compatible = "ibm,plb-440gx", "ibm,plb4";
 		#address-cells = <2>;