iio: dummy: Add correct tabs and spaces to Kconfig

Kconfig from iio/dummy does not follow the coding style recommendations.
According to the coding-style, Lines under a config definition are
indented with one tab, while help text is indented an additional two
spaces. This patch adds the proper tabulation and space.

Signed-off-by: Rodrigo Siqueira <rodrigosiqueiramelo@gmail.com>
Reviewed-by: Daniel Baluta <daniel.baluta@nxp.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>

drivers/iio/dummy/Kconfig

@@ -9,20 +9,20 @@ config IIO_DUMMY_EVGEN
 	tristate
 
 config IIO_SIMPLE_DUMMY
-       tristate "An example driver with no hardware requirements"
-       depends on IIO_SW_DEVICE
-       help
-	 Driver intended mainly as documentation for how to write
-	 a driver. May also be useful for testing userspace code
-	 without hardware.
+	tristate "An example driver with no hardware requirements"
+	depends on IIO_SW_DEVICE
+	help
+	  Driver intended mainly as documentation for how to write
+	  a driver. May also be useful for testing userspace code
+	  without hardware.
 
 if IIO_SIMPLE_DUMMY
 
 config IIO_SIMPLE_DUMMY_EVENTS
-       bool "Event generation support"
-       select IIO_DUMMY_EVGEN
-       help
-         Add some dummy events to the simple dummy driver.
+	bool "Event generation support"
+	select IIO_DUMMY_EVGEN
+	help
+	  Add some dummy events to the simple dummy driver.
 
 config IIO_SIMPLE_DUMMY_BUFFER
 	bool "Buffered capture support"