ARM: dts: SPEAr320: Boot the board in EXTENDED_MODE

On spear320 device supported mode are:

   * AUTO_NET_SMII_MODE
   * AUTO_NET_MII_MODE
   * AUTO_EXP_MODE
   * SMALL_PRINTERS_MODE
   * EXTENDED_MODE

spear320-evb board is designed for EXTENDED_MODE only, hence it does not
boot correctly in current form where pinctrl part for some devices fail.

Configure and boot the SPEAr320 evaluation board in EXTENDED_MODE.
Signed-off-by: NVipul Kumar Samar <vipulkumar.samar@st.com>
Signed-off-by: NShiraz Hashim <shiraz.hashim@st.com>
Acked-by: NViresh Kumar <viresh.kumar@linaro.org>

arch/arm/boot/dts/spear320-evb.dts

@@ -26,7 +26,7 @@
 
 	ahb {
 		pinmux@b3000000 {
-			st,pinmux-mode = <3>;
+			st,pinmux-mode = <4>;
 			pinctrl-names = "default";
 			pinctrl-0 = <&state_default>;