drivers: pps: Make PPS into a menuconfig to ease disabling

So that there's no need to get into the submenu to disable all related config
entries.

The BROKEN PPS_GENERATOR_PARPORT now also depends on PPS

Signed-off-by: Vincent Legoll <vincent.legoll@gmail.com>
Acked-by: Rodolfo Giometti <giometti@enneenne.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/pps/clients/Kconfig

@@ -2,12 +2,12 @@
 # PPS clients configuration
 #
 
-if PPS
-
 comment "PPS clients support"
+	depends on PPS
 
 config PPS_CLIENT_KTIMER
 	tristate "Kernel timer client (Testing client, use for debug)"
+	depends on PPS
 	help
 	  If you say yes here you get support for a PPS debugging client
 	  which uses a kernel timer to generate the PPS signal.
@@ -37,5 +37,3 @@ config PPS_CLIENT_GPIO
 	  GPIO. To be useful you must also register a platform device
 	  specifying the GPIO pin and other options, usually in your board
 	  setup.
-
-endif