ARM: zynq: Wire-up saving environment to QSPI

Extend options for saving variables to QSPI.

Reviewed-by: Jagan Teki <jteki@openedev.com>
Signed-off-by: Michal Simek <monstr@monstr.eu>

include/configs/zynq-common.h

@@ -197,7 +197,11 @@
 /* Environment */
 #ifndef CONFIG_ENV_IS_NOWHERE
 # ifndef CONFIG_SYS_NO_FLASH
+/* Environment in NOR flash */
 #  define CONFIG_ENV_IS_IN_FLASH
+# elif defined(CONFIG_ZYNQ_QSPI)
+/* Environment in Serial Flash */
+#  define CONFIG_ENV_IS_IN_SPI_FLASH
 # elif defined(CONFIG_SYS_NO_FLASH)
 #  define CONFIG_ENV_IS_NOWHERE
 # endif