brcmfmac: make use of cfg80211_check_combinations()
brcmfmac: make use of cfg80211_check_combinations()

Use cfg80211_check_combinations() so we can bail out early when an
interface add or change results in an invalid combination.

Reviewed-by: Hante Meuleman <31ca5aa57e9f47a38c33f2797b138069dfa82656@broadcom.com>
Reviewed-by: Franky (Zhenhui) Lin <c740ae0f5dfc9bd2203ae1a0d3155a31e94c745d@broadcom.com>
Reviewed-by: Pieter-Paul Giesberts <d101f7ec36e185d305862a92a05a9a0c1b62aa38@broadcom.com>
Signed-off-by: Arend van Spriel <06447fbe43693466d3293d0b5eaeeb2efd3d7d3a@broadcom.com>
Signed-off-by: Kalle Valo <7081a7d99b8c74c0698a728df19e3915a995d7e1@codeaurora.org>

KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs