bcrmf -> brcmf -> wifi

Fixes: bb51b535 ("ARM64: dts: Add support for Meson GXM")
Cc: Neil Armstrong <narmstrong@baylibre.com>
Signed-off-by: NAndreas Färber <afaerber@suse.de>
Reviewed-by: NNeil Armstrong <narmstrong@baylibre.com>
Signed-off-by: NKevin Hilman <khilman@baylibre.com>