kernel: rename show_stack_loglvl() => show_stack()

Now the last users of show_stack() got converted to use an explicit log
level, show_stack_loglvl() can drop it's redundant suffix and become once
again well known show_stack().

Signed-off-by: Dmitry Safonov <dima@arista.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Link: http://lkml.kernel.org/r/20200418201944.482088-51-dima@arista.com
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

arch/nds32/kernel/traps.c

@@ -135,8 +135,7 @@ static void __dump(struct task_struct *tsk, unsigned long *base_reg,
 	printk("%s\n", loglvl);
 }
 
-void show_stack_loglvl(struct task_struct *tsk, unsigned long *sp,
-		       const char *loglvl)
+void show_stack(struct task_struct *tsk, unsigned long *sp, const char *loglvl)
 {
 	unsigned long *base_reg;
 
@@ -157,11 +156,6 @@ void show_stack_loglvl(struct task_struct *tsk, unsigned long *sp,
 	barrier();
 }
 
-void show_stack(struct task_struct *tsk, unsigned long *sp)
-{
-	show_stack_loglvl(tsk, sp, KERN_EMERG);
-}
-
 DEFINE_SPINLOCK(die_lock);
 
 /*