ath79: add new OF only target for QCA MIPS silicon

This target aims to replace ar71xx mid-term. The big part that is still
missing is making the MMIO/AHB wifi work using OF. NAND and mikrotik
subtargets will follow.

Signed-off-by: John Crispin <john@phrozen.org>

target/linux/ath79/base-files/etc/hotplug.d/firmware/10-ath9k-eeprom

@@ -0,0 +1,40 @@
+#!/bin/sh
+
+[ -e /lib/firmware/$FIRMWARE ] && exit 0
+
+. /lib/functions.sh
+. /lib/functions/system.sh
+
+ath9k_eeprom_die() {
+	echo "ath9k eeprom: " "$*"
+	exit 1
+}
+
+ath9k_eeprom_extract() {
+	local part=$1
+	local offset=$2
+	local count=$3
+	local mtd
+
+	mtd=$(find_mtd_chardev $part)
+	[ -n "$mtd" ] || \
+		ath9k_eeprom_die "no mtd device found for partition $part"
+
+	dd if=$mtd of=/lib/firmware/$FIRMWARE bs=1 skip=$offset count=$count 2>/dev/null || \
+		ath9k_eeprom_die "failed to extract from $mtd"
+}
+
+board=$(board_name)
+
+case "$FIRMWARE" in
+"ath9k-eeprom-pci-0000:00:00.0.bin")
+	case $board in
+	"ubnt,unifi")
+		ath9k_eeprom_extract "art" 4096 2048
+		;;
+	*)
+		ath9k_eeprom_die "board $board is not supported yet"
+		;;
+	esac
+	;;
+esac