sunxi-mmc: use new mode on both controllers on A64

Using new mode improves stability of eMMC and SD cards. Without
it SPL fails to load u-boot from SD on Pinebook.

Signed-off-by: Vasily Khoruzhick <anarsoul@gmail.com>
Reviewed-by: Chen-Yu Tsai <wens@csie.org>
Tested-by: Jagan Teki <jagan@amarulasolutions.com> # Amarula A64-Relic
Reviewed-by: Jagan Teki <jagan@openedev.com>
diff --git a/arch/arm/mach-sunxi/Kconfig b/arch/arm/mach-sunxi/Kconfig
index 66fff6c..3c54f51 100644
--- a/arch/arm/mach-sunxi/Kconfig
+++ b/arch/arm/mach-sunxi/Kconfig
@@ -282,6 +282,7 @@
 	select SUN6I_PRCM
 	select SUNXI_DE2
 	select SUNXI_GEN_SUN6I
+	select MMC_SUNXI_HAS_NEW_MODE
 	select SUPPORT_SPL
 	select SUNXI_DRAM_DW
 	select SUNXI_DRAM_DW_32BIT