gpio: tps6586x: Add gpio support through platform driver

Converting the gpio driver of tps6586x to a platform
driver in place of registering the gpio through core
driver.
The motivation of the change is:
- This is inline with the mfd drivers implementation.
- This will move the related gpio support to gpio driver
  folder where all gpio related drivers are available.
  This will be easy the maintenance and enhancement is
  anything done for gpio.
- The gpio functionality can be selected through config
  variable.

Signed-off-by: Laxman Dewangan <ldewangan@nvidia.com>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>

1 files changed, 7 insertions, 0 deletions

diff --git a/drivers/gpio/Kconfig b/drivers/gpio/Kconfig
index c4067d0141f..f141befe981 100644
--- a/drivers/gpio/Kconfig
+++ b/drivers/gpio/Kconfig
@@ -579,6 +579,13 @@ config GPIO_AB8500
         help
           Select this to enable the AB8500 IC GPIO driver
 
+config GPIO_TPS6586X
+        bool "TPS6586X GPIO"
+        depends on MFD_TPS6586X
+        help
+          Select this option to enable GPIO driver for the TPS6586X
+          chip family.
+
 config GPIO_TPS65910
         bool "TPS65910 GPIO"
         depends on MFD_TPS65910