[nrf noup] boot/../loader: reboot after updating s0/s1

As this is MCUboot updating itself, it should reboot the device
so NSIB will chainload the update MCUboot

Signed-off-by: Andrzej Puzdrowski <andrzej.puzdrowski@nordicsemi.no>
(cherry picked from commit 8541955)

boot/bootutil/src/loader.c

@@ -49,6 +49,10 @@
 #include "bootutil/boot_hooks.h"
 #include "bootutil/mcuboot_status.h"
 
+#ifdef __ZEPHYR__
+#include <zephyr/sys/reboot.h>
+#endif
+
 #if defined(CONFIG_SOC_NRF5340_CPUAPP) && defined(PM_CPUNET_B0N_ADDRESS)
 #include <dfu/pcd.h>
 #ifdef CONFIG_PCD_READ_NETCORE_APP_VERSION
@@ -2506,6 +2510,12 @@ context_boot_go(struct boot_loader_state *state, struct boot_rsp *rsp)
                 rc = boot_perform_update(state, &bs);
             }
             assert(rc == 0);
+#if defined(PM_S1_ADDRESS) && defined(CONFIG_REBOOT)
+            if (owner_nsib[BOOT_CURR_IMG(state)]) {
+                    sys_reboot(SYS_REBOOT_COLD);
+
+            }
+#endif
             break;
 
         case BOOT_SWAP_TYPE_FAIL:

boot/zephyr/Kconfig

@@ -18,6 +18,7 @@ config MCUBOOT
 	select MPU_ALLOW_FLASH_WRITE if ARM_MPU
 	select USE_DT_CODE_PARTITION if HAS_FLASH_LOAD_OFFSET
 	select MCUBOOT_BOOTUTIL_LIB
+	select REBOOT if SECURE_BOOT
 
 config BOOT_USE_MBEDTLS
 	bool