android: binder: Prefer __func__ to using hardcoded function name

Coding style fixup
Signed-off-by: Elad Wexler <elad.wexler@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/android/binder.c

@@ -4709,7 +4709,7 @@ static int binder_mmap(struct file *filp, struct vm_area_struct *vma)
 	return 0;
 
 err_bad_arg:
-	pr_err("binder_mmap: %d %lx-%lx %s failed %d\n",
+	pr_err("%s: %d %lx-%lx %s failed %d\n", __func__,
 	       proc->pid, vma->vm_start, vma->vm_end, failure_string, ret);
 	return ret;
 }
@@ -4719,7 +4719,7 @@ static int binder_open(struct inode *nodp, struct file *filp)
 	struct binder_proc *proc;
 	struct binder_device *binder_dev;
 
-	binder_debug(BINDER_DEBUG_OPEN_CLOSE, "binder_open: %d:%d\n",
+	binder_debug(BINDER_DEBUG_OPEN_CLOSE, "%s: %d:%d\n", __func__,
 		     current->group_leader->pid, current->pid);
 
 	proc = kzalloc(sizeof(*proc), GFP_KERNEL);