spi: zynqmp_gqspi: Add support for ZynqMP qspi driver

This patch adds qspi driver support for ZynqMP SoC. This
driver is responsible for communicating with qspi flash
devices.

Signed-off-by: Siva Durga Prasad Paladugu <siva.durga.paladugu@xilinx.com>
[jagan: removed GQSPI_MIO_NUM_ macros]
Reviewed-by: Jagan Teki <jagan@openedev.com>
diff --git a/drivers/spi/Kconfig b/drivers/spi/Kconfig
index f5960a7..b85fca5 100644
--- a/drivers/spi/Kconfig
+++ b/drivers/spi/Kconfig
@@ -230,6 +230,13 @@
 	  Zynq QSPI IP core. This IP is used to connect the flash in
 	  4-bit qspi, 8-bit dual stacked and shared 4-bit dual parallel.
 
+config ZYNQMP_GQSPI
+	bool "Configure ZynqMP Generic QSPI"
+	depends on ARCH_ZYNQMP
+	help
+	  This option is used to enable ZynqMP QSPI controller driver which
+	  is used to communicate with qspi flash devices.
+
 endif # if DM_SPI
 
 config SOFT_SPI