zephyr-kernel-src.inc: Add backport patch for storage partition

Patch already merged upstream, but after the 2.6 release we are based
on. Taking the backport in here until we can figure out if that can go
to the Zephyr 2.6 LTS branch.

The storage partition itself is needed on the Arduino Nano e.g. for
OpenThread or applications needed a storage space.

Signed-off-by: Stefan Schmidt <stefan.schmidt@huawei.com>
Signed-off-by: Naveen Saini <naveen.kumar.saini@intel.com>

recipes-kernel/zephyr-kernel/files/arduino-nano-33-ble-storage-partition.patch

+commit 6c9945aafa00c09149e2052a9c2bccad16dd1d8a
+Author: Stefan Schmidt <stefan.schmidt@huawei.com>
+Date:   Fri May 7 11:47:44 2021 +0200
+
+    boards/arduino_nano_33_ble: add storage partition at end of flash
+    
+    Change default partition table to allow for application which need
+    storage. One use case is running the OpenThread integration which has
+    a dependency on this.
+
+    Upstream-Status: Backported [https://github.com/zephyrproject-rtos/zephyr/commit/6c9945aafa00c09149e2052a9c2bccad16dd1d8a]
+    
+    Signed-off-by: Stefan Schmidt <stefan.schmidt@huawei.com>
+    Signed-off-by: Naveen Saini <naveen.kumar.saini@intel.com>
+
+diff --git a/boards/arm/arduino_nano_33_ble/arduino_nano_33_ble.dts b/boards/arm/arduino_nano_33_ble/arduino_nano_33_ble.dts
+index d09b66ec43..d11d800eb5 100644
+--- a/boards/arm/arduino_nano_33_ble/arduino_nano_33_ble.dts
++++ b/boards/arm/arduino_nano_33_ble/arduino_nano_33_ble.dts
+@@ -44,15 +44,27 @@
+ 
+ 		boot_partition: partition@0 {
+ 			label = "sam-ba";
+-			reg = <0x0 0x10000>;
++			reg = <0x00000000 0x00010000>;
+ 			read-only;
+ 		};
+ 
+ 		code_partition: partition@10000 {
+ 			label = "code";
+-			reg = <0x10000 0xf0000>;
++			reg = <0x00010000 0x000e8000>;
+ 			read-only;
+ 		};
++
++		/*
++		 * The flash starting at 0x000f8000 and ending at
++		 * 0x000fffff is reserved for use by the application.
++		 *
++		 * Storage partition will be used by FCB/LittleFS/NVS
++		 * if enabled.
++		 */
++		storage_partition: partition@f8000 {
++			label = "storage";
++			reg = <0x000f8000 0x00008000>;
++		};
+ 	};
+ };
+ 

recipes-kernel/zephyr-kernel/zephyr-kernel-src-2.6.0.inc

@@ -14,4 +14,5 @@ PV = "2.6.0+git${SRCPV}"
 
 SRC_URI_append = " file://0001-cmake-add-yocto-toolchain.patch \
                     file://0001-x86-fix-efi-binary-generation-issue-in-cross-compila.patch \
+                    file://arduino-nano-33-ble-storage-partition.patch \
                     "