samples: net: Enable LTO to fix flash overflow

Due to recent upmerge we are seeing flash overflow in aws_iot and
azure_iot_hub samples, so, enable LTO to fix the build.

Signed-off-by: Chaitanya Tata <[email protected]>

Author: krish2718

samples/net/aws_iot/boards/nrf7002dk_nrf5340_cpuapp_ns.conf

@@ -109,3 +109,7 @@ CONFIG_TLS_CREDENTIALS_BACKEND_PROTECTED_STORAGE=y
 CONFIG_TFM_PROFILE_TYPE_SMALL=y
 CONFIG_PM_PARTITION_SIZE_TFM_SRAM=0xc000
 CONFIG_PM_PARTITION_SIZE_TFM=0x1fe00
+
+# Enable LTO to save flash memory
+CONFIG_LTO=y
+CONFIG_ISR_TABLES_LOCAL_DECLARATION=y

samples/net/azure_iot_hub/boards/nrf7002dk_nrf5340_cpuapp_ns.conf

@@ -104,3 +104,7 @@ CONFIG_TLS_CREDENTIALS_BACKEND_PROTECTED_STORAGE=y
 CONFIG_TFM_PROFILE_TYPE_SMALL=y
 CONFIG_PM_PARTITION_SIZE_TFM_SRAM=0xc000
 CONFIG_PM_PARTITION_SIZE_TFM=0x1fe00
+
+# Enable LTO to save flash memory
+CONFIG_LTO=y
+CONFIG_ISR_TABLES_LOCAL_DECLARATION=y

west.yml

@@ -144,7 +144,7 @@ manifest:
     - name: nrfxlib
       repo-path: sdk-nrfxlib
       path: nrfxlib
-      revision: pull/1745/head
+      revision: 61ea24061c4a9c69fdb9d8e818c0eda682fba7fd
     - name: trusted-firmware-m
       repo-path: sdk-trusted-firmware-m
       path: modules/tee/tf-m/trusted-firmware-m