[PATCH 21.02] mwlwifi: downgrade the 88W8964's firmware to 9.3.2.6 to prevent instability

[Arınç ÜNAL]

Avoid 88W8964 firmware 9.3.2.12 for Wi-Fi instabilities it causes on Linksys WRT3200ACM & WRT32X until fixes on master branch are backported to openwrt-21.02.

A lot of users, me included, with Linksys WRT32X & WRT3200ACM devices experience often Wi-Fi cutouts on OpenWrt 21.02.0-rc3.
Here are people who had issues with 9.3.2.12 on WRT3200ACM. They no longer have the issue after installing OpenWrt 19.07 or downgrading to the 9.3.2.6 firmware.
https://forum.openwrt.org/t/pre-compiled-updated-mwlwifi-drivers-for-stable-releases/3262/682
https://forum.openwrt.org/t/pre-compiled-updated-mwlwifi-drivers-for-stable-releases/3262/688
https://forum.openwrt.org/t/connectivity-issues-with-wifi/79003
https://forum.openwrt.org/t/users-needed-to-test-wi-fi-stability-on-linksys-wrt3200acm-wrt32x-on-openwrt-21-02-0-rc3/101700/2
https://forum.openwrt.org/t/users-needed-to-test-wi-fi-stability-on-linksys-wrt3200acm-wrt32x-on-openwrt-21-02-0-rc3/101700/14
https://forum.openwrt.org/t/users-needed-to-test-wi-fi-stability-on-linksys-wrt3200acm-wrt32x-on-openwrt-21-02-0-rc3/101700/16

I can confirm downgrading to 9.3.2.6 fixed the Wi-Fi cut-outs on my WRT32X.
https://forum.openwrt.org/t/users-needed-to-test-wi-fi-stability-on-linksys-wrt3200acm-wrt32x-on-openwrt-21-02-0-rc3/101700

Signed-off-by: Arınç ÜNAL <arinc.unal at gmail.com>
---
 package/kernel/mwlwifi/Makefile | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/package/kernel/mwlwifi/Makefile b/package/kernel/mwlwifi/Makefile
index eb986dca03..0d0ac701d9 100644
--- a/package/kernel/mwlwifi/Makefile
+++ b/package/kernel/mwlwifi/Makefile
@@ -15,9 +15,9 @@ PKG_LICENSE_FILES:=
 
 PKG_SOURCE_URL:=https://github.com/kaloz/mwlwifi
 PKG_SOURCE_PROTO:=git
-PKG_SOURCE_DATE:=2020-02-06
-PKG_SOURCE_VERSION:=a2fd00bb74c35820dfe233d762690c0433a87ef5
-PKG_MIRROR_HASH:=0eda0e774a87e58e611d6436350e1cf2be3de50fddde334909a07a15b0c9862b
+PKG_SOURCE_DATE:=2019-08-18
+PKG_SOURCE_VERSION:=747796b2f126df01c3c5442c607b4ea0497b1c6c
+PKG_MIRROR_HASH:=11985b8132edd1db1001748b0fc6d915205b7bcaf2a7512a4befb5ef3cc83bb9
 
 PKG_MAINTAINER:=Imre Kaloz <kaloz at openwrt.org>
 PKG_BUILD_PARALLEL:=1
-- 
2.25.1