gpio: GPIO_REGMAP: select REGMAP instead of depending on it

REGMAP is a hidden (not user visible) symbol. Users cannot set it
directly thru "make *config", so drivers should select it instead of
depending on it if they need it.

Consistently using "select" or "depends on" can also help reduce
Kconfig circular dependency issues.

Therefore, change the use of "depends on REGMAP" to "select REGMAP".

Fixes: ebe3631 ("gpio: add a reusable generic gpio_chip using regmap")
Signed-off-by: Randy Dunlap <[email protected]>
Cc: Michael Walle <[email protected]>
Cc: Linus Walleij <[email protected]>
Cc: Bartosz Golaszewski <[email protected]>
Cc: [email protected]
Acked-by: Michael Walle <[email protected]>
Signed-off-by: Bartosz Golaszewski <[email protected]>

Author: rddunlap

drivers/gpio/Kconfig

@@ -100,7 +100,7 @@ config GPIO_GENERIC
 	tristate
 
 config GPIO_REGMAP
-	depends on REGMAP
+	select REGMAP
 	tristate
 
 # put drivers in the right section, in alphabetical order