sunxi: add support for Allwinner H6 SoC

Allwinner H6 is a new SoC from Allwinner features USB3 and PCIe
interfaces.

This patch adds support for it.

The corresponding DTSI file, from Linux next-20180720, is also
introduced.

Signed-off-by: Icenowy Zheng <icenowy@aosc.io>
Acked-by: Maxime Ripard <maxime.ripard@bootlin.com>
Reviewed-by: Jagan Teki <jagan@openedev.com>
Tested-by: Jagan Teki <jagan@amarulasolutions.com>
diff --git a/arch/arm/mach-sunxi/cpu_info.c b/arch/arm/mach-sunxi/cpu_info.c
index aadf575..ae4745b 100644
--- a/arch/arm/mach-sunxi/cpu_info.c
+++ b/arch/arm/mach-sunxi/cpu_info.c
@@ -96,6 +96,8 @@
 	puts("CPU:   Allwinner A64 (SUN50I)\n");
 #elif defined CONFIG_MACH_SUN50I_H5
 	puts("CPU:   Allwinner H5 (SUN50I)\n");
+#elif defined CONFIG_MACH_SUN50I_H6
+	puts("CPU:   Allwinner H6 (SUN50I)\n");
 #else
 #warning Please update cpu_info.c with correct CPU information
 	puts("CPU:   SUNXI Family\n");