linuxkm/linuxkm_wc_port.h: fixes for legacy kernels, particularly: when building TLS stack (!WOLFCRYPT_ONLY), use the best heap with a functioning realloc(), else use kvmalloc() and friends if available, even if kvrealloc() is unavailable. also, provide for XMALLOC_USER and XMALLOC_OVERRIDE;
linuxkm/lkcapi_glue.c: recognize the new CONFIG_CRYPTO_SELFTESTS_FULL alongside the old CONFIG_CRYPTO_MANAGER_EXTRA_TESTS;
linuxkm/linuxkm_memory.c: restore my__show_free_areas() in case it's still needed.