x86: use KSYM_NAME_LEN

Use KSYM_NAME_LEN instead of numeric value
Signed-off-by: NCyrill Gorcunov <gorcunov@gmail.com>
Signed-off-by: NIngo Molnar <mingo@elte.hu>
Signed-off-by: NThomas Gleixner <tglx@linutronix.de>

arch/x86/kernel/traps_64.c

@@ -107,7 +107,7 @@ void printk_address(unsigned long address, int reliable)
 	const char *symname;
 	char *modname;
 	char *delim = ":";
-	char namebuf[128];
+	char namebuf[KSYM_NAME_LEN];
 	char reliab[4] = "";
 
 	symname = kallsyms_lookup(address, &symsize, &offset,