[#8176] Add pjsip build definitions for Linux/s390 targets

Signed-off-by: Emmanuel Milou <emmanuel.milou@savoirfairelinux.com>

daemon/libs/pjproject/pjlib/include/pj/config.h

@@ -240,6 +240,18 @@
 #	define PJ_IS_BIG_ENDIAN		0
 #   endif
 
+#elif defined (PJ_M_S390) || defined(__s390) || defined(__s390__) || \
+	defined(__S390__) || defined(_M_S390)
+    /*
+     * S390, big endian
+     */
+#   undef PJ_M_S390
+#   define PJ_M_S390		1
+#   define PJ_M_NAME		"s390"
+#   define PJ_HAS_PENTIUM	0
+#   define PJ_IS_LITTLE_ENDIAN	0
+#   define PJ_IS_BIG_ENDIAN	1
+
 #elif defined (PJ_M_POWERPC) || defined(__powerpc) || defined(__powerpc__) || \
 	defined(__POWERPC__) || defined(__ppc__) || defined(_M_PPC) || \
 	defined(_ARCH_PPC)