drivers: gpio: add broadcom iproc gpio driver support

Add gpio driver support for Broadcom iproc-based socs.

Signed-off-by: Rayagonda Kokatanur <rayagonda.kokatanur@broadcom.com>
Signed-off-by: Sheetal Tigadoli <sheetal.tigadoli@broadcom.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
diff --git a/drivers/gpio/Kconfig b/drivers/gpio/Kconfig
index c192844..ff5cd7e 100644
--- a/drivers/gpio/Kconfig
+++ b/drivers/gpio/Kconfig
@@ -154,6 +154,17 @@
 	help
 	  This driver supports i.MX7ULP Rapid GPIO2P controller.
 
+config IPROC_GPIO
+	bool "Broadcom iProc GPIO driver(without pinconf)"
+	default n
+	help
+	  The Broadcom iProc based SoCs- Cygnus, NS2, NS3, NSP and Stingray,
+	  use the same GPIO Controller IP hence this driver could be used
+	  for all.
+
+	  The Broadcom iProc based SoCs have multiple GPIO controllers and only
+	  the always-ON GPIO controller (CRMU/AON) is supported by this driver.
+
 config HSDK_CREG_GPIO
 	bool "HSDK CREG GPIO griver"
 	depends on DM_GPIO