scripts: compliance: Add items to UNDEF_KCONFIG_ALLOWLIST

`BOOT_ENCRYPT_ALG_AES_128` and `BOOT_ENCRYPT_ALG_AES_256` are used in
`share/sysbuild/image_configurations/BOOTLOADER_image_default.cmake`
They were first introduced in commit 9a1fe30

Signed-off-by: MA Junyi <[email protected]>

Author: mjysci

scripts/ci/check_compliance.py

@@ -1200,6 +1200,8 @@ def check_no_undef_outside_kconfig(self, kconf):
         "BOOT_DIRECT_XIP", # Used in sysbuild for MCUboot configuration
         "BOOT_DIRECT_XIP_REVERT", # Used in sysbuild for MCUboot configuration
         "BOOT_ENCRYPTION_KEY_FILE", # Used in sysbuild
+        "BOOT_ENCRYPT_ALG_AES_128", # Used in sysbuild
+        "BOOT_ENCRYPT_ALG_AES_256", # Used in sysbuild
         "BOOT_ENCRYPT_IMAGE", # Used in sysbuild
         "BOOT_FIRMWARE_LOADER", # Used in sysbuild for MCUboot configuration
         "BOOT_FIRMWARE_LOADER_BOOT_MODE", # Used in sysbuild for MCUboot configuration