Bump buildroot to 2019.02

bsp/buildroot/package/libpam-tacplus/0001-Fix-getrandom-call-in-magic.c.patch

@@ -0,0 +1,30 @@
+From 5b49ec03b165b8d7c69e196bf1c2780274fbe1ee Mon Sep 17 00:00:00 2001
+From: Fabrice Fontaine <fontaine.fabrice@gmail.com>
+Date: Sun, 20 May 2018 15:47:33 +0200
+Subject: [PATCH] Fix getrandom call in magic.c
+
+_GNU_SOURCE must be defined before any includes to be able to use
+getrandom
+
+Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
+
+[Upstream status: https://github.com/jeroennijhof/pam_tacplus/pull/118]
+---
+ libtac/lib/magic.c | 1 +
+ 1 file changed, 1 insertion(+)
+
+diff --git a/libtac/lib/magic.c b/libtac/lib/magic.c
+index 97aa035..a9cbe86 100644
+--- a/libtac/lib/magic.c
++++ b/libtac/lib/magic.c
+@@ -18,6 +18,7 @@
+  * See `CHANGES' file for revision history.
+  */
+ 
++#define _GNU_SOURCE
+ #include <stdio.h>
+ #include <stdlib.h>
+ #include <sys/types.h>
+-- 
+2.14.1
+