package/asterisk: fix uclibc-ng build

Fix the following uclibc-ng build failure raised since bump to version
20.7.0 in commit 0e6d4d2171ce70d3aa6693f860a36ff08fc4d2b3 and
https://github.com/asterisk/asterisk/commit/2694792e13c7f3ab1911c4a69fba0df32c544177:

stasis/control.c: In function 'exec_command_on_condition':
stasis/control.c:313:3: warning: implicit declaration of function 'pthread_kill'; did you mean 'pthread_yield'? [-Wimplicit-function-declaration]
  313 |   pthread_kill(control->control_thread, SIGURG);
      |   ^~~~~~~~~~~~
      |   pthread_yield
stasis/control.c:313:41: error: 'SIGURG' undeclared (first use in this function)
  313 |   pthread_kill(control->control_thread, SIGURG);
      |                                         ^~~~~~

Fixes: 0e6d4d2171ce70d3aa6693f860a36ff08fc4d2b3
 - http://autobuild.buildroot.org/results/d16e4ca4bd26234f84d17da24c04a8c19faba6c5

Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr>

package/asterisk/0005-res-stasis-control.c-include-signal.h.patch

@@ -0,0 +1,43 @@
+From 8391dc3891337ecff8becefe1927a30d3922b848 Mon Sep 17 00:00:00 2001
+From: Fabrice Fontaine <fontaine.fabrice@gmail.com>
+Date: Wed, 1 May 2024 16:50:50 +0200
+Subject: [PATCH] res/stasis/control.c: include signal.h
+
+Include signal.h to avoid the following build failure with uclibc-ng
+raised since
+https://github.com/asterisk/asterisk/commit/2694792e13c7f3ab1911c4a69fba0df32c544177:
+
+stasis/control.c: In function 'exec_command_on_condition':
+stasis/control.c:313:3: warning: implicit declaration of function 'pthread_kill'; did you mean 'pthread_yield'? [-Wimplicit-function-declaration]
+  313 |   pthread_kill(control->control_thread, SIGURG);
+      |   ^~~~~~~~~~~~
+      |   pthread_yield
+stasis/control.c:313:41: error: 'SIGURG' undeclared (first use in this function)
+  313 |   pthread_kill(control->control_thread, SIGURG);
+      |                                         ^~~~~~
+
+Fixes:
+ - http://autobuild.buildroot.org/results/d16e4ca4bd26234f84d17da24c04a8c19faba6c5
+
+Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
+Upstream: https://github.com/asterisk/asterisk/pull/728
+---
+ res/stasis/control.c | 2 ++
+ 1 file changed, 2 insertions(+)
+
+diff --git a/res/stasis/control.c b/res/stasis/control.c
+index 360f20790..4ed0e2af1 100644
+--- a/res/stasis/control.c
++++ b/res/stasis/control.c
+@@ -41,6 +41,8 @@
+ #include "asterisk/musiconhold.h"
+ #include "asterisk/app.h"
+ 
++#include <signal.h>
++
+ AST_LIST_HEAD(app_control_rules, stasis_app_control_rule);
+ 
+ /*!
+-- 
+2.43.0
+