re-add kernel 5.13, mask 5.14

sys-kernel/decade-sources/files/board-nanopi-m4v2-dts-fix-stability-issues.patch

@@ -1,29 +0,0 @@
-By default rk808's buck regulators switch voltage in multiple 100mV jumps.
-This seems to be too much for NanoPi M4V2 and makes it unstable.
-
-Shortening the steps to 50mV (4 multiple of base buck step which is 12.5mV)
-makes the NanoPi M4V2 stable.
-Tested with multiple hours of running memtester without a single failure.
-
-Signed-off-by: Piotr Szczepanik <piter75@gmail.com>
-
-diff --git a/arch/arm64/boot/dts/rockchip/rk3399-nanopi-m4v2.dts b/arch/arm64/boot/dts/rockchip/rk3399-nanopi-m4v2.dts
-index 2dcaf497c..094440ce3 100644
---- a/arch/arm64/boot/dts/rockchip/rk3399-nanopi-m4v2.dts
-+++ b/arch/arm64/boot/dts/rockchip/rk3399-nanopi-m4v2.dts
-@@ -64,6 +64,10 @@ &gmac {
- 	rx_delay = <0x16>;
- };
- 
-+&rk808 {
-+	max-buck-steps-per-change = <4>;
-+};
-+
- &vcc3v3_sys {
- 	vin-supply = <&vcc5v0_core>;
- };
-@@ -80,3 +84,4 @@ &vbus_typec {
- 	regulator-always-on;
- 	vin-supply = <&vdd_5v>;
- };
-+