package/arp-scan: allow to not install package data

The patch adds an option that allows you to not install the data along
with the binaries (less than 100kb), saving 1.4Mb of rootfs data.

By default, the data is installed for backward compatibility.

Cc: Angelo Compagnucci <angelo@amarulasolutions.com>
Signed-off-by: Dario Binacchi <dario.binacchi@amarulasolutions.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>

package/arp-scan/Config.in

@@ -8,3 +8,14 @@ config BR2_PACKAGE_ARP_SCAN
 	  discover and fingerprint IP hosts on the local network.
 
 	  https://github.com/royhills/arp-scan
+
+if BR2_PACKAGE_ARP_SCAN
+
+config BR2_PACKAGE_ARP_SCAN_DATA
+	bool "install data (OUI)"
+	default y  # legacy
+	help
+	  Say 'y' here (the default) to install the data along the
+	  binaries.
+
+endif # BR2_PACKAGE_ARP_SCAN

package/arp-scan/arp-scan.mk

@@ -23,4 +23,8 @@ else
 ARP_SCAN_CONF_OPTS += --without-libcap
 endif
 
+ifeq ($(BR2_PACKAGE_ARP_SCAN_DATA),)
+ARP_SCAN_INSTALL_TARGET_OPTS = DESTDIR=$(TARGET_DIR) install-exec
+endif
+
 $(eval $(autotools-package))