package/quagga: install quagga to staging

quagga installs libraries that provide interfaces to manage network routing
that can be used by other applications.

Signed-off-by: Graham Rhodes <graham.rhodes@rockwellcollins.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
(cherry picked from commit 1e3cd85)
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

package/quagga/quagga.mk

@@ -6,6 +6,7 @@
 
 QUAGGA_VERSION = 1.2.4
 QUAGGA_SITE = http://download.savannah.gnu.org/releases/quagga
+QUAGGA_INSTALL_STAGING = YES
 QUAGGA_DEPENDENCIES = host-gawk host-pkgconf
 QUAGGA_LICENSE = GPL-2.0+
 QUAGGA_LICENSE_FILES = COPYING