ath79: fix several issues for ZyXEL NBG6716

This fixes several issues introduced with ZyXEL NBG6716 support:
- Inhomogeneous indent
- Wrong ath10k MAC patching function
- Wrong brackets for pad-to in nand.mk
- Add missing DEVICE_MODEL
- Remove k2t.sh include (copy/paste leftover)

Fixes: 99835e0999 ("ath79: add support for ZyXEL NBG6716")

Signed-off-by: Adrian Schmutzler <freifunk@adrianschmutzler.de>

target/linux/ath79/nand/base-files/etc/hotplug.d/firmware/11-ath10k-caldata

@@ -3,7 +3,6 @@
 [ -e /lib/firmware/$FIRMWARE ] && exit 0
 
 . /lib/functions/caldata.sh
-. /lib/functions/k2t.sh
 
 board=$(board_name)
 
@@ -12,7 +11,7 @@ case "$FIRMWARE" in
 	case $board in
 	zyxel,nbg6716)
 		caldata_extract "art" 0x5000 0x844
-		ath10kcal_patch_mac $(macaddr_add $(mtd_get_mac_ascii u-boot-env ethaddr) +1)
+		ath10k_patch_mac $(macaddr_add $(mtd_get_mac_ascii u-boot-env ethaddr) +1)
 		;;
 	esac
 	;;