mac80211: enable CONFIG_BRCMFMAC_SDIO for stm32

All stm32 devices use BCM43430 Wi-Fi interface in SDIO mode.

Signed-off-by: Thomas Richard <[email protected]>
Link: https://github.com/openwrt/openwrt/pull/16716
Signed-off-by: Hauke Mehrtens <[email protected]>

package/kernel/mac80211/broadcom.mk

@@ -437,6 +437,7 @@ define KernelPackage/brcmfmac/config
 		default y if TARGET_starfive
 		default y if TARGET_rockchip
 		default y if TARGET_sunxi
+		default y if TARGET_stm32
 		default n
 		help
 		  Enable support for cards attached to an SDIO bus.