portmap: prevent selecting the package when rpcbind is selected

portmap and rpcbind must not be selected at the same time. Users
should use rpcbind in favor of the deprecated portmap.

Signed-off-by: Sagaert Johan <sagaert.johan@skynet.be>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>

package/portmap/Config.in

@@ -1,6 +1,10 @@
 config BR2_PACKAGE_PORTMAP
 	bool "portmap"
 	depends on BR2_TOOLCHAIN_HAS_NATIVE_RPC
+	# portmap and rpcbind provide the same feature, so they are
+	# mutually exclusive. rpcbind is the newer, preferred
+	# implementation.
+	depends on !BR2_PACKAGE_RPCBIND
 	help
 	  The standard portmapper for RPC services.