[nrf fromtree] tests: fs: littlefs: Fix nRF54L15-based dtc overlay files

Fixes these files to no longer delete non-secure partitions as
they are not present, and updates the offset of the area to use

Signed-off-by: Jamie McCrae <[email protected]>
(cherry picked from commit 3d11c84)

Author: nordicjm

tests/subsys/fs/littlefs/boards/bl54l15_dvk_nrf54l15_cpuapp.overlay

@@ -5,19 +5,17 @@
  * SPDX-License-Identifier: Apache-2.0
  */
 
-/delete-node/ &slot0_ns_partition;
 /delete-node/ &slot1_partition;
-/delete-node/ &slot1_ns_partition;
 
 &cpuapp_rram {
 	partitions {
 		compatible = "fixed-partitions";
 		#address-cells = <1>;
 		#size-cells = <1>;
 
-		small_partition: partition@67000 {
+		small_partition: partition@b6000 {
 			label = "small";
-			reg = <0x00067000 0x00010000>;
+			reg = <0x000b6000 0x00010000>;
 		};
 	};
 };

tests/subsys/fs/littlefs/boards/bl54l15u_dvk_nrf54l15_cpuapp.overlay

@@ -5,19 +5,17 @@
  * SPDX-License-Identifier: Apache-2.0
  */
 
-/delete-node/ &slot0_ns_partition;
 /delete-node/ &slot1_partition;
-/delete-node/ &slot1_ns_partition;
 
 &cpuapp_rram {
 	partitions {
 		compatible = "fixed-partitions";
 		#address-cells = <1>;
 		#size-cells = <1>;
 
-		small_partition: partition@67000 {
+		small_partition: partition@b6000 {
 			label = "small";
-			reg = <0x00067000 0x00010000>;
+			reg = <0x000b6000 0x00010000>;
 		};
 	};
 };

tests/subsys/fs/littlefs/boards/nrf54l15dk_nrf54l15_cpuapp.overlay

@@ -4,19 +4,17 @@
  * SPDX-License-Identifier: Apache-2.0
  */
 
-/delete-node/ &slot0_ns_partition;
 /delete-node/ &slot1_partition;
-/delete-node/ &slot1_ns_partition;
 
 &cpuapp_rram {
 	partitions {
 		compatible = "fixed-partitions";
 		#address-cells = <1>;
 		#size-cells = <1>;
 
-		small_partition: partition@67000 {
+		small_partition: partition@b6000 {
 			label = "small";
-			reg = <0x00067000 0x00010000>;
+			reg = <0x000b6000 0x00010000>;
 		};
 	};
 };

tests/subsys/fs/littlefs/boards/ophelia4ev_nrf54l15_cpuapp.overlay

@@ -4,19 +4,17 @@
  * SPDX-License-Identifier: Apache-2.0
  */
 
-/delete-node/ &slot0_ns_partition;
 /delete-node/ &slot1_partition;
-/delete-node/ &slot1_ns_partition;
 
 &cpuapp_rram {
 	partitions {
 		compatible = "fixed-partitions";
 		#address-cells = <1>;
 		#size-cells = <1>;
 
-		small_partition: partition@67000 {
+		small_partition: partition@b6000 {
 			label = "small";
-			reg = <0x00067000 0x00010000>;
+			reg = <0x000b6000 0x00010000>;
 		};
 	};
 };