wifi: brcmfmac: Add DMI nvram filename quirk for Acer A1 840 tablet

wifi: brcmfmac: Add DMI nvram filename quirk for Acer A1 840 tablet

The Acer A1 840 tablet contains quite generic names in the sys_vendor and
product_name DMI strings, without this patch brcmfmac will try to load:
brcmfmac43340-sdio.Insyde-BayTrail.txt as nvram file which is a bit
too generic.

Add a DMI quirk so that a unique and clearly identifiable nvram file name
is used on the Acer A1 840 tablet.

Acked-by: Arend van Spriel <arend.vanspriel@broadcom.com>
Signed-off-by: Hans de Goede <hansg@kernel.org>
Link: https://patch.msgid.link/20251103100314.353826-1-hansg@kernel.org
Signed-off-by: Johannes Berg <johannes.berg@intel.com>