build: include status of TPM2 in the feature string show by --version

fbuihuu · yuwata · commit 6d39da79c85d · 2022-03-29T05:20:20.000+09:00
diff --git a/src/basic/build.c b/src/basic/build.c
@@ -160,6 +160,12 @@ const char* const systemd_features =
         " -QRENCODE"
 #endif
 
+#if HAVE_TPM2
+        " +TPM2"
+#else
+        " -TPM2"
+#endif
+
         /* compressors */
 
 #if HAVE_BZIP2
