Bug 26136

Hello !

First I try on the MLO forum https://www.mageialinux-online.org/forum/topic-27121+probleme-wifi-configuration-du-pilote-bancale.php , but without success.

The build of Raspberry Pi 3B+ has by default the brcmfmac driver for the wifi.
But when it is launched with modprobe, it doesn't find a 'wrong' file :

```
rmmod brcmfmac
modprobe brcmfmac                                                                                                                                                                                                              
> brcmfmac: brcmf_fw_alloc_request: using brcm/brcmfmac43430-sdio for chip BCM43430/1
> brcmfmac mmc1:0001:1: Direct firmware load for brcm/brcmfmac43430-sdio.raspberrypi,3-model-b-plus.txt failed with error -2
> brcmfmac mmc1:0001:1: Direct firmware load for brcm/brcmfmac43430-sdio.txt failed with error -2
> brcmfmac: brcmf_sdio_htclk: HT Avail timeout (1000000): clkctl 0x50
ls /lib/firmware/brcm/*3-model-b*
> /lib/firmware/brcm/brcmfmac43430-sdio.raspberrypi,3-model-b.txt
> /lib/firmware/brcm/brcmfmac43455-sdio.raspberrypi,3-model-b-plus.txt
cat /proc/device-tree/compatible
> raspberrypi,3-model-b-plus
> brcm,bcm2837
```
As we can see in the previous commands, the Raspberry Pi 3B+ has the brcmfmac43455 version. On IRC (not true science), someone told me that the file seek is based on the file /proc/device-tree/compatible which would give :
``` .raspberrypi,3-model-b-plus.txt ```
But I didn't find where the part ```brcm/brcmfmac43430-sdio``` comes from...
This part should be ```brcm/brcmfmac43455-sdio.```