Or in the case of RTL8188EU, report the RSSI to the rate control code.

The rate control code for RTL8188EU is less likely to switch to a lower
rate when the RSSI is high. The firmware-based rate control in the other
chips probably works the same way.

This affects all the chips, but it was only tested with RTL8188EU,
RTL8188FU, and RTL8192EU.

Signed-off-by: Bitterblue Smith <rtl8821cerfe2@gmail.com>
Reviewed-by: Ping-Ke Shih <pkshih@realtek.com>
Signed-off-by: Kalle Valo <kvalo@kernel.org>
Link: https://lore.kernel.org/r/2aab4f3f-e914-4fe1-f29a-deac91774d05@gmail.com