Enable `lg2` logs to be printed to stderr in test

Signed-off-by: Zane Shelley <zshelle@us.ibm.com>
Change-Id: Ie4922b3bf6adeeb1e6dbe8db7e76ed8ae605d754
diff --git a/test/meson.build b/test/meson.build
index ef8a3a9..e1ab8bb 100644
--- a/test/meson.build
+++ b/test/meson.build
@@ -62,11 +62,13 @@
 test_deps = [
   libhei_dep,
   libpdbg_dep,
+  phosphor_logging_dep,
   gtest_dep,
 ]
 
 test_vars = [
   pdbg_env,
+  'LG2_FORCE_STDERR=true',
 ]
 
 test_util_lib = static_library('test_util_lib',