sun8i: Add dram initialization support

Based on the register / dram_para headers from the Allwinner u-boot / linux
sources + the init sequences from boot0.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Acked-by: Ian Campbell <ijc@hellion.org.uk>
diff --git a/board/sunxi/Kconfig b/board/sunxi/Kconfig
index 88f09fb..9bb593a 100644
--- a/board/sunxi/Kconfig
+++ b/board/sunxi/Kconfig
@@ -29,10 +29,11 @@
 config MACH_SUN8I
 	bool "sun8i (Allwinner A23)"
 	select CPU_V7
+	select SUPPORT_SPL
 
 endchoice
 
-if MACH_SUN6I
+if MACH_SUN6I || MACH_SUN8I
 
 config DRAM_CLK
 	int "sun6i dram clock speed"