samples/bluetooth/cap_acceptor: Add missing include

strncasecmp()'s prototype is provided in strings.h
let's include it to avoid a build warning.

Signed-off-by: Alberto Escolar Piedras <[email protected]>

Author: aescolar

samples/bluetooth/cap_acceptor/src/cap_acceptor_broadcast.c

@@ -10,6 +10,7 @@
 #include <stddef.h>
 #include <stdint.h>
 #include <string.h>
+#include <strings.h>
 
 #include <zephyr/autoconf.h>
 #include <zephyr/bluetooth/audio/audio.h>