mach-sunxi: Enable SPI boot for SUNIV and licheepi nano

Enable SPI boot in SPL on SUNIV architecture and use
it in the licheepi nano that uses the F1C100s.

Signed-off-by: Jesse Taube <Mr.Bossman075@gmail.com>
Reviewed-by: Andre Przywara <andre.przywara@arm.com>
Signed-off-by: Andre Przywara <andre.przywara@arm.com>
diff --git a/configs/licheepi_nano_defconfig b/configs/licheepi_nano_defconfig
index 2ac0ef4..9fd1dcc 100644
--- a/configs/licheepi_nano_defconfig
+++ b/configs/licheepi_nano_defconfig
@@ -9,3 +9,4 @@
 CONFIG_DRAM_CLK=156
 CONFIG_DRAM_ZQ=0
 # CONFIG_VIDEO_SUNXI is not set
+CONFIG_SPL_SPI_SUNXI=y