fix .gitignore for mlkem and pick up hidden header

Author: Theo Buehler

.gitignore

@@ -115,9 +115,7 @@ tests/freenull*
 tests/gost2814789t*
 tests/key_schedule*
 tests/lhash_test*
-tests/mlkem*.c
-tests/mlkem*.h
-tests/mlkem*.txt
+tests/mlkem*
 tests/mont*
 tests/policy*
 tests/rfc3779*

crypto/Makefile.am

@@ -655,6 +655,7 @@ noinst_HEADERS += hidden/openssl/idea.h
 noinst_HEADERS += hidden/openssl/lhash.h
 noinst_HEADERS += hidden/openssl/md4.h
 noinst_HEADERS += hidden/openssl/md5.h
+noinst_HEADERS += hidden/openssl/mlkem.h
 noinst_HEADERS += hidden/openssl/modes.h
 noinst_HEADERS += hidden/openssl/objects.h
 noinst_HEADERS += hidden/openssl/ocsp.h