realtek: 6.6: copy patch net-dsa-add-support-for-rtl838x-switch

Copy the patch file to 6.6. Reorder it in the 7xx range.

Signed-off-by: Markus Stockhausen <markus.stockhausen@gmx.de>

target/linux/realtek/patches-6.6/718-net-dsa-add-support-for-rtl838x-switch.patch

@@ -0,0 +1,42 @@
+From 2b88563ee5aafd9571d965b7f2093a0f58d98a31 Mon Sep 17 00:00:00 2001
+From: John Crispin <john@phrozen.org>
+Date: Thu, 26 Nov 2020 12:02:21 +0100
+Subject: net: dsa: Add support for rtl838x switch
+
+* rename the target to realtek
+* add refactored DSA driver
+* add latest gpio driver
+* lots of arch cleanups
+* new irq driver
+* additional boards
+
+Submitted-by: Bert Vermeulen <bert@biot.com>
+Submitted-by: Birger Koblitz <mail@birger-koblitz.de>
+Submitted-by: Sander Vanheule <sander@svanheule.net>
+Submitted-by: Bjørn Mork <bjorn@mork.no>
+Submitted-by: John Crispin <john@phrozen.org>
+---
+ drivers/net/dsa/rtl83xx/Kconfig               | 2 ++
+ drivers/net/dsa/rtl83xx/Makefile              | 1 +
+ 2 files changed, 3 insertions(+)
+
+--- a/drivers/net/dsa/Kconfig
++++ b/drivers/net/dsa/Kconfig
+@@ -85,6 +85,8 @@ source "drivers/net/dsa/sja1105/Kconfig"
+ 
+ source "drivers/net/dsa/xrs700x/Kconfig"
+ 
++source "drivers/net/dsa/rtl83xx/Kconfig"
++
+ config NET_DSA_REALTEK_SMI
+ 	tristate "Realtek SMI Ethernet switch family support"
+ 	select NET_DSA_TAG_RTL4_A
+--- a/drivers/net/dsa/Makefile
++++ b/drivers/net/dsa/Makefile
+@@ -24,5 +24,6 @@ obj-y				+= microchip/
+ obj-y				+= mv88e6xxx/
+ obj-y				+= ocelot/
+ obj-y				+= qca/
++obj-y				+= rtl83xx/
+ obj-y				+= sja1105/
+ obj-y				+= xrs700x/