nds32: To use the generic dump_stack()

Use the generic dump_stack() instead of nds32 one because they are doing
the same thing.
Signed-off-by: Greentime Hu <greentime@andestech.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>

arch/nds32/kernel/traps.c

@@ -156,18 +156,6 @@ static void __dump(struct task_struct *tsk, unsigned long *base_reg)
 	pr_emerg("\n");
 }
 
-void dump_stack(void)
-{
-	unsigned long *base_reg;
-	if (!IS_ENABLED(CONFIG_FRAME_POINTER))
-		__asm__ __volatile__("\tori\t%0, $sp, #0\n":"=r"(base_reg));
-	else
-		__asm__ __volatile__("\tori\t%0, $fp, #0\n":"=r"(base_reg));
-	__dump(NULL, base_reg);
-}
-
-EXPORT_SYMBOL(dump_stack);
-
 void show_stack(struct task_struct *tsk, unsigned long *sp)
 {
 	unsigned long *base_reg;