make rb532 kernel compile with gcc 4.4

target/rb532/kernel.config

@@ -896,7 +896,7 @@ CONFIG_TRACE_IRQFLAGS_SUPPORT=y
 CONFIG_PRINTK_TIME=y
 # CONFIG_ENABLE_WARN_DEPRECATED is not set
 # CONFIG_ENABLE_MUST_CHECK is not set
-CONFIG_FRAME_WARN=0
+CONFIG_FRAME_WARN=1024
 CONFIG_MAGIC_SYSRQ=y
 # CONFIG_UNUSED_SYMBOLS is not set
 # CONFIG_DEBUG_FS is not set