Fix brcm43456 detection

- Add brcm43456 to the chip mapping table in brcmfmac.
- Loosely backported from
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/drivers/net/wireless/broadcom/brcm80211/brcmfmac/sdio.c?h=v5.4-rc4&id=e3062e05e1cfe378bb9b3fa0bef46711372bcf13

Change-Id: I6dbefd20c431f2dac66ad4819af5a2166ff0a0eb
1 file changed