sunxi: Rename CONFIG_SUNXI to CONFIG_ARCH_SUNXI

CONFIG_SUNXI -> CONFIG_ARCH_SUNXI
and removed CONFIG_SUNIX from config_whitelist.txt

Cc: Simon Glass <sjg@chromium.org>
Cc: Ian Campbell <ijc@hellion.org.uk>
Cc: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Jagan Teki <jteki@openedev.com>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
diff --git a/tools/Makefile b/tools/Makefile
index e6f7993..556f397 100644
--- a/tools/Makefile
+++ b/tools/Makefile
@@ -169,7 +169,7 @@
 hostprogs-$(CONFIG_MX28) += mxsboot
 HOSTCFLAGS_mxsboot.o := -pedantic
 
-hostprogs-$(CONFIG_SUNXI) += mksunxiboot
+hostprogs-$(CONFIG_ARCH_SUNXI) += mksunxiboot
 
 hostprogs-$(CONFIG_NETCONSOLE) += ncb
 hostprogs-$(CONFIG_SHA1_CHECK_UB_IMG) += ubsha1