dropbear: Explicity list default RootPasswordAuth value in default config file so that users know to turn off RootPasswordAuth as well as PasswordAuth to prevent password logins as root.

SVN-Revision: 22394

package/dropbear/files/dropbear.config

@@ -1,4 +1,5 @@
 config dropbear
 	option PasswordAuth 'on'
+	option RootPasswordAuth 'on'
 	option Port         '22'
 #	option BannerFile   '/etc/banner'