driver: spi: add bcm iproc qspi support

IPROC qspi driver supports both BSPI and MSPI modes.

Signed-off-by: Rayagonda Kokatanur <rayagonda.kokatanur@broadcom.com>
Signed-off-by: Bharat Gooty <bharat.gooty@broadcom.com>
Acked-by: Rayagonda Kokatanur <rayagonda.kokatanur@broadcom.com>

Signed-off-by: Roman Bacik <roman.bacik@broadcom.com>
Reviewed-by: Jagan Teki <jagan@amarulasolutions.com>
diff --git a/drivers/spi/Kconfig b/drivers/spi/Kconfig
index 0a6a85f..423a757 100644
--- a/drivers/spi/Kconfig
+++ b/drivers/spi/Kconfig
@@ -185,6 +185,12 @@
 	  access the SPI NOR flash on platforms embedding this Intel
 	  ICH IP core.
 
+config IPROC_QSPI
+	bool "Broadcom iProc QSPI Flash Controller driver"
+	help
+	  Enable Broadcom iProc QSPI Flash Controller driver.
+	  This driver can be used to access the SPI NOR flash.
+
 config KIRKWOOD_SPI
 	bool "Marvell Kirkwood SPI Driver"
 	help