package/matchbox: finally add prompts to all sub-packages

We currently do not have that many packages without a prompt, and when
we do, they are limited to system-related packages that can't be
selected or are forcibly selected under various system-specific
conditions.

This is clearly not the case for the matchbox sub-packages, so just give
them a prompt, even when they are forcibly selected by the main matchbox
package, and can't be selected without it.

That will at least tell the user those packages exist and are to be
built.

Signed-off-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
Reviewed-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>

package/matchbox-fakekey/Config.in

@@ -1,4 +1,6 @@
 config BR2_PACKAGE_MATCHBOX_FAKEKEY
-	bool
+	bool "matchbox-fakekey"
 	select BR2_PACKAGE_MATCHBOX_LIB
 	select BR2_PACKAGE_XLIB_LIBXTST
+	help
+	  Library for simulating key press events under X11.

package/matchbox-lib/Config.in

@@ -1,2 +1,4 @@
 config BR2_PACKAGE_MATCHBOX_LIB
-	bool
+	bool "matchbox-lib"
+	help
+	  Matchbox common functionality library.

package/matchbox-startup-monitor/Config.in

@@ -1,4 +1,6 @@
 config BR2_PACKAGE_MATCHBOX_STARTUP_MONITOR
-	bool
+	bool "matchbox-startup-monitor"
 	select BR2_PACKAGE_MATCHBOX_LIB
 	default y if BR2_PACKAGE_STARTUP_NOTIFICATION
+	help
+	  Matchbox Panel Startup Monitor Applet.