sunxi: Sync dts files with upstream kernel

Sync dts files with the current (Aug 18th 2016) state of Maxime's
linux/sunxi/for-next repo.

Note this commit also updates configs/MSI_Primo81_defconfig,
adding: "# CONFIG_REQUIRE_SERIAL_CONSOLE is not set", this is necessary
because the tablet does not have a reachable uart so the dts sync
drops its serial0 alias.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Acked-by: Ian Campbell <ijc@hellion.org.uk>
diff --git a/arch/arm/dts/sun5i-a10s-olinuxino-micro.dts b/arch/arm/dts/sun5i-a10s-olinuxino-micro.dts
index 86d046a..aef9147 100644
--- a/arch/arm/dts/sun5i-a10s-olinuxino-micro.dts
+++ b/arch/arm/dts/sun5i-a10s-olinuxino-micro.dts
@@ -248,6 +248,13 @@
 	status = "okay";
 };
 
+&spi2 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&spi2_pins_a>,
+		    <&spi2_cs0_pins_a>;
+	status = "okay";
+};
+
 &uart0 {
 	pinctrl-names = "default";
 	pinctrl-0 = <&uart0_pins_a>;