arm: zynq: Update ZYBO config options

Update the ZYBO device tree and enable config options that relate to the
added devices in the device tree.

Signed-off-by: Nathan Rossi <nathan@nathanrossi.com>
Cc: Albert Aribaud <albert.u.boot@aribaud.net>
Cc: Michal Simek <monstr@monstr.eu>
Cc: Simon Glass <sjg@chromium.org>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
diff --git a/configs/zynq_zybo_defconfig b/configs/zynq_zybo_defconfig
index 6f0bd0b..d443e92 100644
--- a/configs/zynq_zybo_defconfig
+++ b/configs/zynq_zybo_defconfig
@@ -17,3 +17,6 @@
 CONFIG_DEBUG_UART_ZYNQ=y
 CONFIG_DEBUG_UART_BASE=0xe0001000
 CONFIG_DEBUG_UART_CLOCK=50000000
+CONFIG_SPI_FLASH=y
+CONFIG_SPI_FLASH_SPANSION=y
+CONFIG_ZYNQ_QSPI=y