iputils: fix ping and traceroute6 executable permissions

The iputils executables are installed without the setuid bit set,
which prevents some programs from working.

This patch adds a permission table to fix the permissions of the ping
and traceroute6 executables.

Signed-off-by: Einar Jon Gunnarsson <tolvupostur@gmail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>

package/iputils/iputils.mk

@@ -69,4 +69,9 @@ define IPUTILS_INSTALL_TARGET_CMDS
 	$(INSTALL) -D -m 755 $(@D)/traceroute6 $(TARGET_DIR)/bin/traceroute6
 endef
 
+define IPUTILS_PERMISSIONS
+	/bin/ping        f 4755 0 0 - - - - -
+	/bin/traceroute6 f 4755 0 0 - - - - -
+endef
+
 $(eval $(generic-package))