ARM: dts: STiH407-family: Add ports-implemented property in sata nodes

Despite ST AHCI version = 1.3, reading HOST_PORTS_IMPL
returns 0. So force HOST_PORTS_IMPL to 1 by using
ports-implemented DT property.
Signed-off-by: NPatrice Chotard <patrice.chotard@st.com>
Signed-off-by: NLee Jones <lee.jones@linaro.org>
Reviewed-by: NPeter Griffin <peter.griffin@linaro.org>

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

@@ -607,6 +607,8 @@
 			clock-names = "ahci_clk";
 			clocks = <&clk_s_c0_flexgen CLK_ICN_REG>;
 
+			ports-implemented = <0x1>;
+
 			status = "disabled";
 		};
 
@@ -630,6 +632,8 @@
 			clock-names = "ahci_clk";
 			clocks = <&clk_s_c0_flexgen CLK_ICN_REG>;
 
+			ports-implemented = <0x1>;
+
 			status = "disabled";
 		};