patches/openwrt: Omnia support patch: remove hardware buffer management

This patch is included in OpenWrt 21.02 [1] and its backported from
Linux kernel [2] [3].

Linux kernel as can be seen in [3].

[1] https://github.com/openwrt/openwrt/commit/17a627ec8245163059585da9ce7a768d1f4bd3ac
[2] https://www.mail-archive.com/linux-kernel@vger.kernel.org/msg2480595.html
[3] https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/arch/arm/boot/dts/armada-385-turris-omnia.dts?h=v5.11.2&id=018b88eee1a2efda26ed2f09aab33ccdc40ef18f

patches/openwrt/wip/0005-mvebu-initial-support-for-Omnia-on-5.4-kernel.patch

@@ -1025,88 +1025,6 @@ index 0000000..b77d5fd
 +-- 
 +2.24.1
 +
-diff --git a/target/linux/mvebu/patches-5.4/8804-ARM-dts-mvebu-armada-385-turris-omnia-enable-HW-buff.patch b/target/linux/mvebu/patches-5.4/8804-ARM-dts-mvebu-armada-385-turris-omnia-enable-HW-buff.patch
-new file mode 100644
-index 0000000..6f98821
---- /dev/null
-+++ b/target/linux/mvebu/patches-5.4/8804-ARM-dts-mvebu-armada-385-turris-omnia-enable-HW-buff.patch
-@@ -0,0 +1,76 @@
-+From f4efd080c9e4f5d2c5557c3ba72584b4eb349ccc Mon Sep 17 00:00:00 2001
-+From: =?UTF-8?q?Marek=20Beh=C3=BAn?= <marek.behun@nic.cz>
-+Date: Thu, 7 May 2020 17:54:21 +0200
-+Subject: [PATCH] ARM: dts: mvebu: armada-385-turris-omnia: enable HW buffer
-+ management
-+MIME-Version: 1.0
-+Content-Type: text/plain; charset=UTF-8
-+Content-Transfer-Encoding: 8bit
-+
-+Enable HW buffer management for all three ethernet controllers on Turris
-+Omnia.
-+
-+Signed-off-by: Marek Behún <marek.behun@nic.cz>
-+---
-+ .../arm/boot/dts/armada-385-turris-omnia.dtsi | 20 ++++++++++++++++++-
-+ 1 file changed, 19 insertions(+), 1 deletion(-)
-+
-+diff --git a/arch/arm/boot/dts/armada-385-turris-omnia.dtsi b/arch/arm/boot/dts/armada-385-turris-omnia.dtsi
-+index 5faecdbfaf8b..967d5bf13b5f 100644
-+--- a/arch/arm/boot/dts/armada-385-turris-omnia.dtsi
-++++ b/arch/arm/boot/dts/armada-385-turris-omnia.dtsi
-+@@ -29,7 +29,8 @@
-+ 		ranges = <MBUS_ID(0xf0, 0x01) 0 0xf1000000 0x100000
-+ 			  MBUS_ID(0x01, 0x1d) 0 0xfff00000 0x100000
-+ 			  MBUS_ID(0x09, 0x19) 0 0xf1100000 0x10000
-+-			  MBUS_ID(0x09, 0x15) 0 0xf1110000 0x10000>;
-++			  MBUS_ID(0x09, 0x15) 0 0xf1110000 0x10000
-++			  MBUS_ID(0x0c, 0x04) 0 0xf1200000 0x100000>;
-+ 
-+ 		internal-regs {
-+ 
-+@@ -93,10 +94,21 @@
-+ 	};
-+ };
-+ 
-++&bm {
-++	status = "okay";
-++};
-++
-++&bm_bppi {
-++	status = "okay";
-++};
-++
-+ /* Connected to 88E6176 switch, port 6 */
-+ &eth0 {
-+ 	pinctrl-names = "default";
-+ 	pinctrl-0 = <&ge0_rgmii_pins>;
-++	buffer-manager = <&bm>;
-++	bm,pool-long = <0>;
-++	bm,pool-short = <3>;
-+ 	status = "okay";
-+ 	phy-mode = "rgmii";
-+ 
-+@@ -110,6 +122,9 @@
-+ &eth1 {
-+ 	pinctrl-names = "default";
-+ 	pinctrl-0 = <&ge1_rgmii_pins>;
-++	buffer-manager = <&bm>;
-++	bm,pool-long = <1>;
-++	bm,pool-short = <3>;
-+ 	status = "okay";
-+ 	phy-mode = "rgmii";
-+ 
-+@@ -121,6 +136,9 @@
-+ 
-+ /* WAN dual-personality port */
-+ &eth2 {
-++	buffer-manager = <&bm>;
-++	bm,pool-long = <2>;
-++	bm,pool-short = <3>;
-+ 	phys = <&comphy5 2>;
-+ 	status = "okay";
-+ };
-+-- 
-+2.24.1
-+
 diff --git a/target/linux/mvebu/patches-5.4/9950-net-dsa-allow-for-multiple-CPU-ports.patch b/target/linux/mvebu/patches-5.4/9950-net-dsa-allow-for-multiple-CPU-ports.patch
 new file mode 100644
 index 0000000..1424d17