ath79-generic: (re)add unifi-ap-ac-lr

Gone due to
commit 45c84a11 ("ar71xx: drop target")

docs/user/supported_devices.rst

@@ -89,6 +89,7 @@ ath79-generic
 
 * Ubiquiti
 
+  - UniFi AC LR
   - UniFi AC Mesh
   - UniFi AP
   - UniFi AP LR

targets/ath79-generic

@@ -333,6 +333,11 @@ device('tp-link-wbs210-v2', 'tplink_wbs210-v2')
 
 -- Ubiquiti
 
+device('ubiquiti-unifi-ac-lr', 'ubnt_unifiac-lr', {
+	factory = false,
+	packages = ATH10K_PACKAGES_QCA9880,
+})
+
 device('ubiquiti-unifi-ac-mesh', 'ubnt_unifiac-mesh', {
 	factory = false,
 	packages = ATH10K_PACKAGES_QCA9880,