Staging: silicom: fix sparse non static symbol warnings

Fixes the following sparse warnings:

drivers/staging/silicom/bypasslib/bypass.c:528:12: warning: symbol 'init_lib_module' was not declared. Should it be static?
drivers/staging/silicom/bypasslib/bypass.c:534:13: warning: symbol 'cleanup_lib_module' was not declared. Should it be static?
Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/silicom/bypasslib/bypass.c

@@ -525,13 +525,13 @@ static int get_bypass_info(int if_index, struct bp_info *bp_info)
 }
 EXPORT_SYMBOL(get_bypass_info);
 
-int __init init_lib_module(void)
+static int __init init_lib_module(void)
 {
 	printk(VERSION);
 	return 0;
 }
 
-void __exit cleanup_lib_module(void)
+static void __exit cleanup_lib_module(void)
 {
 }