20260317-wc_linuxkm_rng_is_wolfcrypt

[douzzer]

linuxkm/lkcapi_sha_glue.c and linuxkm/linuxkm_wc_port.h: add wc_linux_kernel_rng_is_wolfcrypt(), and remove incorrect crypto_put_default_rng() in get_crypto_default_rng().

wolfcrypt/src/rng_bank.c and wolfssl/wolfcrypt/rng_bank.h: add !WC_NO_CONSTRUCTORS gate around wc_rng_new_bankref().

tested with

TEST_WOLFGUARD=1 WOLFGUARD_BRANCH=local:20260316-various-backports wolfssl-multi-test.sh ...
check-source-text
quantum-safe-wolfssl-all-crypto-only-intelasm-sp-asm-linuxkm-mainline-insmod

(the 20260316-various-backports branch has the refactor to use libwolfssl rng_bank and call wc_linux_kernel_rng_is_wolfcrypt().)

[douzzer]

retest this please

in my Fips callback, ok = 0, err = -255
message = wolfcrypt FIPS ECDSA Pairwise Agreement Test Failure

(jenkins/job/wolfSSL/job/PRB-FIPS-windows-test-ACVP/8351/pipeline-overview/)