mpc5121: pdm360ng: add coprocessor POST

Adds coprocessor communication POST code

Signed-off-by: Anatolij Gustschin <agust@denx.de>
diff --git a/include/configs/pdm360ng.h b/include/configs/pdm360ng.h
index 228a686..718abdf 100644
--- a/include/configs/pdm360ng.h
+++ b/include/configs/pdm360ng.h
@@ -445,6 +445,11 @@
 #define CONFIG_KGDB_SER_INDEX	2	/* which serial port to use */
 #endif
 
+#ifdef CONFIG_SERIAL_MULTI
+/* POST support */
+#define CONFIG_POST             (CONFIG_SYS_POST_COPROC)
+#endif
+
 /*
  * Environment Configuration
  */