sysvinit: adjust help text

sysvinit is far from ultimate init implementation these days. Update the
help text to match reality.

Signed-off-by: Baruch Siach <baruch@tkos.co.il>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>

package/sysvinit/Config.in

@@ -4,6 +4,7 @@ config BR2_PACKAGE_SYSVINIT
 	depends on BR2_INIT_SYSV
 	depends on BR2_PACKAGE_BUSYBOX_SHOW_OTHERS
 	help
-	  /sbin/init - parent of all processes
+	  System V style implementation of /sbin/init, parent of all
+	  processes
 
 	  http://savannah.nongnu.org/projects/sysvinit