quagga: disable PIE on ARC

Even though ARC gcc understands "-pie" option and attempts to generate
PIE binaries as of today PIE is not really supported for user-space
applications.

So we disable PIE detection if building for ARC.
That fixes http://autobuild.buildroot.net/results/ca0/ca0b1e271f29d7639b6a6e895472a35e2c1d8aba
and also prevents execution of non-supported PIE binary in runtime.

Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com>
Cc: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>

package/quagga/quagga.mk

@@ -39,4 +39,8 @@ else
 QUAGGA_CONF_OPTS += --disable-vtysh
 endif
 
+ifeq ($(BR2_arc),y)
+QUAGGA_CONF_OPTS += --disable-pie
+endif
+
 $(eval $(autotools-package))