partition_manager: Move PCD partition to non secure flash

The PCD partition is configured as non secure from TF-M
but it was placed in the secure area by partition manager.
Move the PCD partition to the non secure region where it
should be.

Ref: NCSDK-33735

Signed-off-by: Georgios Vasilakis <[email protected]>

Author: Vge0rge

subsys/partition_manager/pm.yml.pcd

@@ -3,6 +3,9 @@
 # This block of RAM is used for communicating Network Core firmware update
 # metadata
 pcd_sram:
-  placement: {after: [start]}
-  size: CONFIG_NRF_SPU_RAM_REGION_SIZE
+  placement: {before: end}
+  size: CONFIG_NRF_TRUSTZONE_RAM_REGION_SIZE
   region: sram_primary
+#ifdef CONFIG_BUILD_WITH_TFM
+  align: {start: CONFIG_NRF_TRUSTZONE_RAM_REGION_SIZE}
+#endif

subsys/partition_manager/pm.yml.trustzone

@@ -1,11 +1,11 @@
 # Create a span for the RAM to be configured as SECURE by TF-M.
 sram_secure:
   region: sram_primary
-  span:
-    - pcd_sram
+  span: []
 
 sram_nonsecure:
   region: sram_primary
   span:
     - sram_primary /* Here, sram_primary refers to the (NS) app's RAM. */
+    - pcd_sram
     - rpmsg_nrf53_sram