Config.in files: use if/endif instead of 'depends on' for main symbol

In the Config.in file of package foo, it often happens that there are other
symbols besides BR2_PACKAGE_FOO. Typically, these symbols only make sense
when foo itself is enabled. There are two ways to express this: with
    depends on BR2_PACKAGE_FOO
in each extra symbol, or with
    if BR2_PACKAGE_FOO
        ...
    endif
around the entire set of extra symbols.

The if/endif approach avoids the repetition of 'depends on' statements on
multiple symbols, so this is clearly preferred. But even when there is only
one extra symbol, if/endif is a more logical choice:
- it is future-proof for when extra symbols are added
- it allows to have just one strategy instead of two (less confusion)

This patch modifies the Config.in files accordingly.

Signed-off-by: Thomas De Schampheleire <thomas.de.schampheleire@gmail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>

package/input-tools/Config.in

@@ -4,23 +4,24 @@ config BR2_PACKAGE_INPUT_TOOLS
 	  Tools for the Linux kernel input layer.
 	  http://linuxconsole.sourceforge.net/
 
+if BR2_PACKAGE_INPUT_TOOLS
+
 config BR2_PACKAGE_INPUT_TOOLS_INPUTATTACH
 	bool "inputattach"
-	depends on BR2_PACKAGE_INPUT_TOOLS
 	default y
 	help
 	  Inputattach is used for attaching a serial line to the input layer.
 
 config BR2_PACKAGE_INPUT_TOOLS_JSCAL
 	bool "jscal"
-	depends on BR2_PACKAGE_INPUT_TOOLS
 	default y
 	help
 	  Joystick calibration program.
 
 config BR2_PACKAGE_INPUT_TOOLS_JSTEST
 	bool "jstest"
-	depends on BR2_PACKAGE_INPUT_TOOLS
 	default y
 	help
 	  Joystick test program.
+
+endif