lib/crypto: tests: Add a .kunitconfig file

Add a .kunitconfig file to the lib/crypto/ directory so that the crypto
library tests can be run more easily using kunit.py.  Example with UML:

    tools/testing/kunit/kunit.py run --kunitconfig=lib/crypto

Example with QEMU:

    tools/testing/kunit/kunit.py run --kunitconfig=lib/crypto --arch=arm64 --make_options LLVM=1

Acked-by: Ard Biesheuvel <ardb@kernel.org>
Link: https://lore.kernel.org/r/20260301040140.490310-1-ebiggers@kernel.org
Signed-off-by: Eric Biggers <ebiggers@kernel.org>

Author: Eric Biggers

lib/crypto/.kunitconfig

@@ -0,0 +1,34 @@
+CONFIG_KUNIT=y
+
+# These kconfig options select all the CONFIG_CRYPTO_LIB_* symbols that have a
+# corresponding KUnit test.  Those symbols cannot be directly enabled here,
+# since they are hidden symbols.
+CONFIG_CRYPTO=y
+CONFIG_CRYPTO_ADIANTUM=y
+CONFIG_CRYPTO_BLAKE2B=y
+CONFIG_CRYPTO_CHACHA20POLY1305=y
+CONFIG_CRYPTO_HCTR2=y
+CONFIG_CRYPTO_MD5=y
+CONFIG_CRYPTO_MLDSA=y
+CONFIG_CRYPTO_SHA1=y
+CONFIG_CRYPTO_SHA256=y
+CONFIG_CRYPTO_SHA512=y
+CONFIG_CRYPTO_SHA3=y
+CONFIG_INET=y
+CONFIG_IPV6=y
+CONFIG_NET=y
+CONFIG_NETDEVICES=y
+CONFIG_WIREGUARD=y
+
+CONFIG_CRYPTO_LIB_BLAKE2B_KUNIT_TEST=y
+CONFIG_CRYPTO_LIB_BLAKE2S_KUNIT_TEST=y
+CONFIG_CRYPTO_LIB_CURVE25519_KUNIT_TEST=y
+CONFIG_CRYPTO_LIB_MD5_KUNIT_TEST=y
+CONFIG_CRYPTO_LIB_MLDSA_KUNIT_TEST=y
+CONFIG_CRYPTO_LIB_NH_KUNIT_TEST=y
+CONFIG_CRYPTO_LIB_POLY1305_KUNIT_TEST=y
+CONFIG_CRYPTO_LIB_POLYVAL_KUNIT_TEST=y
+CONFIG_CRYPTO_LIB_SHA1_KUNIT_TEST=y
+CONFIG_CRYPTO_LIB_SHA256_KUNIT_TEST=y
+CONFIG_CRYPTO_LIB_SHA512_KUNIT_TEST=y
+CONFIG_CRYPTO_LIB_SHA3_KUNIT_TEST=y