libmicrohttpd: disable epoll support on avr32

As it isn't available.

Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

package/libmicrohttpd/libmicrohttpd.mk

@@ -20,4 +20,9 @@ LIBMICROHTTPD_LICENSE = LGPLv2.1+ or eCos
 LIBMICROHTTPD_CONF_OPT += --disable-https
 endif
 
+ifeq ($(BR2_avr32),y)
+# no epoll_create1
+LIBMICROHTTPD_CONF_OPT += --disable-epoll
+endif
+
 $(eval $(autotools-package))