test: disable VMH test when userspace LL is enabled

The VMH test shouldn't be used at all when VMH is enabled and used.
It uses the same memory region as the SOF VMH thereby potentially
corrupting it. It just happens to work without userspace LL
supposedly because then the first VMH allocation only happens after
all the tests have run. With userspace LL this no longer holds, so
the VMH test must be disabled.

Signed-off-by: Guennadi Liakhovetski <guennadi.liakhovetski@linux.intel.com>

Author: lyakh

zephyr/test/CMakeLists.txt

@@ -1,7 +1,10 @@
 if(CONFIG_SOF_BOOT_TEST)
-  zephyr_library_sources_ifdef(CONFIG_VIRTUAL_HEAP
-    vmh.c
-  )
+  if(NOT CONFIG_SOF_USERSPACE_LL)
+    zephyr_library_sources_ifdef(CONFIG_VIRTUAL_HEAP
+      vmh.c
+    )
+  endif()
+
   zephyr_library_sources_ifdef(CONFIG_SOF_VREGIONS
     vpage.c vregion.c
   )