ARM: STi: DT: STiH407: Add sti-sasg-codec dt node

This patch adds the dt node for the internal audio
codec IP.
Signed-off-by: NArnaud Pouliquen <arnaud.pouliquen@st.com>
Signed-off-by: NPeter Griffin <peter.griffin@linaro.org>

arch/arm/boot/dts/stih407-family.dtsi

@@ -877,5 +877,12 @@
 				<&clk_s_c0_flexgen CLK_TX_ICN_DISP_0>,
 				<&clk_s_c0_flexgen CLK_EXT2F_A9>;
 		};
+
+		sti_sasg_codec: sti-sasg-codec {
+			compatible = "st,stih407-sas-codec";
+			#sound-dai-cells = <1>;
+			status = "disabled";
+			st,syscfg = <&syscfg_core>;
+		};
 	};
 };