sunxi: Switch to using malloc_simple for the spl

common/dlmalloc.c is quite big, both in .text and .data usage. E.g. for a
Mele_M9 sun6i board build this reduces .text from 0x4214 to 0x3b94 bytes,
and .data from 0x54c to 0x144 bytes.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Acked-by: Ian Campbell <ijc@hellion.org.uk>
Reviewed-by: Tom Rini <trini@konsulko.com>
diff --git a/arch/arm/cpu/armv7/sunxi/board.c b/arch/arm/cpu/armv7/sunxi/board.c
index d11365b..1d79ba11 100644
--- a/arch/arm/cpu/armv7/sunxi/board.c
+++ b/arch/arm/cpu/armv7/sunxi/board.c
@@ -192,6 +192,7 @@
 
 void board_init_f(ulong dummy)
 {
+	spl_init();
 	preloader_console_init();
 
 #ifdef CONFIG_SPL_I2C_SUPPORT