[PATCH v4 1/4] gpio: vf610: allow disabling the vf610 driver

[Martin Kaiser <martin@kaiser.cx>]

The vf610 gpio driver is enabled by default for all i.MX machines,
without any option to disable it in a board-specific config file.

Most i.MX chipsets have no hardware for this driver. Change the default
to enable GPIO_VF610 for SOC_VF610 and disable it otherwise.

Add a text description after the bool type, this makes the driver
selectable by make config etc.

Fixes: 30a35c07d9e9 ("gpio: vf610: drop the SOC_VF610 dependency for GPIO_VF610")
Signed-off-by: Martin Kaiser <martin@kaiser.cx>
---
v4:
 - add a new patch to enable COMPILE_TEST

v3:
 - split the changes into three patches

v2:
 - enable the vf610 gpio driver in the defconfig files for arm_v7
   (i.MX7ULP) and arm64 (i.MX8QM, DXL, ULP and i.MX93)

 drivers/gpio/Kconfig | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/gpio/Kconfig b/drivers/gpio/Kconfig
index 1301cec94f12..353af1a4d0ac 100644
--- a/drivers/gpio/Kconfig
+++ b/drivers/gpio/Kconfig
@@ -711,7 +711,8 @@ config GPIO_UNIPHIER
 	  Say yes here to support UniPhier GPIOs.
 
 config GPIO_VF610
-	def_bool y
+	bool "VF610 GPIO support"
+	default y if SOC_VF610
 	depends on ARCH_MXC
 	select GPIOLIB_IRQCHIP
 	help
-- 
2.39.2