Realtek card reader does not work with rtsx.ko, stalls keyboard

**Describe the bug**
Realtek card reader does not work with `rtsx.ko`, stalls keyboard.

* Inserting card is regognized in dmesg, but lots of error messages in `dmesg`
* Removing card freezes USB keyboard for a while, but not USB mouse (strange!)

**To Reproduce**
Steps to reproduce the behavior:
1. insert SD card into card reader
2. Add to `/boot/loader.conf`: `dev.rtsx.0.inversion=1` - seemingly no change in result

**Expected behavior**
Cards inserted into the card reader work.

**Screenshots**

```
rtsx0: Interrupt card inserted/removed
rtsx0: Card present
mmc0: on rtsx0
rtsx0: Controller timeout for CMD8
rtsx0: Interrupt card inserted/removed
rtsx0: Card absent
rtsx0: Controller timeout for CMD8
rtsx0: Controller timeout for CMD8
rtsx0: Controller timeout for CMD8
rtsx0: Controller timeout for CMD55
rtsx0: Controller timeout for CMD55
rtsx0: Controller timeout for CMD55
rtsx0: Controller timeout for CMD55
rtsx0: Controller timeout for CMD1
rtsx0: Controller timeout for CMD1
rtsx0: Controller timeout for CMD1
rtsx0: Controller timeout for CMD1
mmc0: No compatible cards found on bus
mmc0: detached
```

**Version (please complete the following information):**
- helloSystem 0.7.0 (Build 0G126), FreeBSD 13.0-RELEASE (installed)

**Computer (please complete the following information):**
- Device: Acer Revo RL85

**Additional context**

* https://github.com/hlh-restart/rtsx/issues/6
* https://cgit.freebsd.org/src/commit/?id=277a326b1e3f8cf23af529e075e157c7a2cc67e4
* https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=255130#c23