[openwrt/openwrt] ar71xx: fix Archer C7v4 5GHz MAC-address

[LEDE Commits]

mkresin pushed a commit to openwrt/openwrt.git, branch master:
https://git.lede-project.org/daae09f1e510eaa22a1e628b12e6c70e3c9c450b

commit daae09f1e510eaa22a1e628b12e6c70e3c9c450b
Author: David Bauer <mail at david-bauer.net>
AuthorDate: Tue Dec 19 02:32:47 2017 +0100

    ar71xx: fix Archer C7v4 5GHz MAC-address
    
    The TP-Link firmware uses (primary_mac-1) as MAC-address
    for the 5GHz WiFi. This applies the same behaviour to LEDE.
    
    Currently, the MAC-address is retrieved from eth1, which
    does not exist on the Archer C7 v4. As a result from this,
    every C7 v4 with LEDE carries the same MAC-Address on the 5GHz WiFi.
    
    Signed-off-by: David Bauer <mail at david-bauer.net>
---
 .../linux/ar71xx/base-files/etc/hotplug.d/firmware/11-ath10k-caldata | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/target/linux/ar71xx/base-files/etc/hotplug.d/firmware/11-ath10k-caldata b/target/linux/ar71xx/base-files/etc/hotplug.d/firmware/11-ath10k-caldata
index ec5f7a3..bc8972c 100644
--- a/target/linux/ar71xx/base-files/etc/hotplug.d/firmware/11-ath10k-caldata
+++ b/target/linux/ar71xx/base-files/etc/hotplug.d/firmware/11-ath10k-caldata
@@ -54,12 +54,15 @@ case "$FIRMWARE" in
 		ath10kcal_extract "ART" 20480 2116
 		ath10kcal_patch_mac $(macaddr_add $(cat /sys/class/net/eth0/address) +16)
 		;;
-	archer-c7-v4|\
 	archer-c25-v1|\
 	tl-wdr6500-v2)
 		ath10kcal_extract "art" 20480 2116
 		ath10kcal_patch_mac $(macaddr_add $(cat /sys/class/net/eth1/address) -2)
 		;;
+	archer-c7-v4)
+		ath10kcal_extract "art" 20480 2116
+		ath10kcal_patch_mac $(macaddr_add $(cat /sys/class/net/eth0/address) -1)
+		;;
 	cf-e355ac|\
 	cf-e380ac-v1|\
 	cf-e380ac-v2|\