RAS: Make local function parse_ras_param() static

Make parse_ras_param() static as it is used locally only.
Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com>
Signed-off-by: Borislav Petkov <bp@suse.de>
Link: http://lkml.kernel.org/r/20170516161034.2973-1-weiyj.lk@gmail.comSigned-off-by: Thomas Gleixner <tglx@linutronix.de>

drivers/ras/ras.c

@@ -29,7 +29,7 @@ EXPORT_TRACEPOINT_SYMBOL_GPL(extlog_mem_event);
 EXPORT_TRACEPOINT_SYMBOL_GPL(mc_event);
 
 
-int __init parse_ras_param(char *str)
+static int __init parse_ras_param(char *str)
 {
 #ifdef CONFIG_RAS_CEC
 	parse_cec_param(str);