Correct checking bdev_check_media_change message

We're not looking for bdev_disk_changed.

Reviewed-by: Brian Behlendorf <[email protected]>
Reviewed-by: Tony Hutter <[email protected]>
Signed-off-by: Ryan Moeller <[email protected]>
Closes openzfs#12492

Author: Ryan Moeller

config/kernel-blkdev.m4

@@ -120,7 +120,7 @@ AC_DEFUN([ZFS_AC_KERNEL_SRC_BLKDEV_BDEV_CHECK_MEDIA_CHANGE], [
 ])
 
 AC_DEFUN([ZFS_AC_KERNEL_BLKDEV_BDEV_CHECK_MEDIA_CHANGE], [
-	AC_MSG_CHECKING([whether bdev_disk_changed() exists])
+	AC_MSG_CHECKING([whether bdev_check_media_change() exists])
 	ZFS_LINUX_TEST_RESULT([bdev_check_media_change], [
 		AC_MSG_RESULT(yes)
 		AC_DEFINE(HAVE_BDEV_CHECK_MEDIA_CHANGE, 1,