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 <[e-mail]>
Signed-off-by: Hans de Goede <[e-mail]>
Link: https://patch.msgid.link/[e-mail]
Signed-off-by: Johannes Berg <[e-mail]>

drivers/net/wireless/broadcom/brcm80211/brcmfmac/dmi.c

···
 	BRCM_CC_4345_CHIP_ID, 6, "acepc-t8"
 };
 
+static const struct brcmf_dmi_data acer_a1_840_data = {
+	BRCM_CC_43340_CHIP_ID, 2, "acer-a1-840"
+};
+
 /* The Chuwi Hi8 Pro uses the same Ampak AP6212 module as the Chuwi Vi8 Plus
  * and the nvram for the Vi8 Plus is already in linux-firmware, so use that.
  */
···
 			DMI_MATCH(DMI_BIOS_VENDOR, "American Megatrends Inc."),
 		},
 		.driver_data = (void *)&acepc_t8_data,
+	},
+	{
+		/* Acer Iconia One 8 A1-840 (non FHD version) */
+		.matches = {
+			DMI_MATCH(DMI_SYS_VENDOR, "Insyde"),
+			DMI_MATCH(DMI_PRODUCT_NAME, "BayTrail"),
+			/* Above strings are too generic also match BIOS date */
+			DMI_MATCH(DMI_BIOS_DATE, "04/01/2014"),
+		},
+		.driver_data = (void *)&acer_a1_840_data,
 	},
 	{
 		/* Chuwi Hi8 Pro with D2D3_Hi8Pro.233 BIOS */