This patch sets the necessary links for brcmfmac firmware. Without the links, the firmware cannot be loaded without causing boot messages like: brcmfmac mmc1:0001:1: Direct firmware load for brcm/brcmfmac43430b0-sdio.raspberrypi,model-zero-2-w.bin failed with error -2
Firmware links for model Zero 2 W were missing.
This patch sets the necessary links for brcmfmac firmware. Without the links, the firmware cannot be loaded without causing boot messages like: brcmfmac mmc1:0001:1: Direct firmware load for brcm/brcmfmac43430b0-sdio.raspberrypi,model-zero-2-w.bin failed with error -2
Fixes agherzan/meta-raspberrypi#1324