Fix MLKEM build.

Signed-off-by: Pol Henarejos <pol.henarejos@cttc.es>

src/hsm/CMakeLists.txt

@@ -1,6 +1,20 @@
+set(HSM_REQUIRES
+    mbedtls
+    efuse
+    pico-keys-sdk
+)
+
+if(ENABLE_PQC)
+    list(APPEND HSM_REQUIRES
+        mlkem512
+        mlkem768
+        mlkem1024
+    )
+endif()
+
 idf_component_register(
     SRCS ${SOURCES}
     INCLUDE_DIRS .
-    REQUIRES mbedtls efuse pico-keys-sdk
+    REQUIRES ${HSM_REQUIRES}
 )
 idf_component_set_property(${COMPONENT_NAME} WHOLE_ARCHIVE ON)