package/systemd: random-seed: add missing header for GRND_NONBLOCK

GRND_NONBLOCK has been introduced with the 3.17 kernel version [1]
while adding getrandom(2) system call.

The header missing_random.h is needed for random-seed.c when building
with old toolchain, such Sourcery CodeBench ARM 2014.05 (kernel headers
3.13).

Fixes:
https://gitlab.com/buildroot.org/buildroot/-/jobs/454255917

[1] https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable.git/commit/?id=c6e9d6f38894798696f23c8084ca7edbf16ee895

Signed-off-by: Romain Naour <romain.naour@smile.fr>
Cc: Yann E. MORIN <yann.morin.1998@free.fr>
Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr>

package/systemd/0001-random-seed-add-missing-header-for-GRND_NONBLOCK.patch

@@ -0,0 +1,39 @@
+From 806e2011a0ea684b10a07b74c4ee0f817437e8c6 Mon Sep 17 00:00:00 2001
+From: Romain Naour <romain.naour@smile.fr>
+Date: Sun, 1 Mar 2020 15:19:01 +0100
+Subject: [PATCH] random-seed: add missing header for GRND_NONBLOCK
+
+GRND_NONBLOCK has been introduced with the 3.17 kernel version [1]
+while adding getrandom(2) system call.
+
+The header missing_random.h is needed for random-seed.c when building
+with old toolchain, such Sourcery CodeBench ARM 2014.05.
+
+Fixes:
+https://gitlab.com/buildroot.org/buildroot/-/jobs/454255917
+
+[1] https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable.git/commit/?id=c6e9d6f38894798696f23c8084ca7edbf16ee895
+
+Upstream status:
+https://github.com/systemd/systemd/pull/14988
+
+Signed-off-by: Romain Naour <romain.naour@smile.fr>
+---
+ src/random-seed/random-seed.c | 1 +
+ 1 file changed, 1 insertion(+)
+
+diff --git a/src/random-seed/random-seed.c b/src/random-seed/random-seed.c
+index 2fcbcb281a..596bff98f1 100644
+--- a/src/random-seed/random-seed.c
++++ b/src/random-seed/random-seed.c
+@@ -19,6 +19,7 @@
+ #include "io-util.h"
+ #include "log.h"
+ #include "main-func.h"
++#include "missing_random.h"
+ #include "missing_syscall.h"
+ #include "mkdir.h"
+ #include "parse-util.h"
+-- 
+2.24.1
+