Fix Stefan Berger email address in the following commit:

  $ git log --author='Stefan Berger stefanb@linux.vnet.ibm.com' --oneline
  4a42fa0ee2 acpi: Update TPM2 ACPI table to more recent specs

Cc: Stefan Berger <stefanb@linux.vnet.ibm.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
---
 .mailmap | 1 +
 1 file changed, 1 insertion(+)

diff --git a/.mailmap b/.mailmap
index b06baa094e..67f7d5caf2 100644
--- a/.mailmap
+++ b/.mailmap
@@ -155,6 +155,7 @@ Roger Pau Monné <roger.pau@citrix.com>
 Shin'ichiro Kawasaki <kawasaki@juno.dti.ne.jp>
 Shin'ichiro Kawasaki <shinichiro.kawasaki@wdc.com>
 Sochin Jiang <sochin.jiang@huawei.com>
+Stefan Berger <stefanb@linux.ibm.com> <Stefan Berger stefanb@linux.vnet.ibm.com>
 Takashi Yoshii <takasi-y@ops.dti.ne.jp>
 Thomas Huth <thuth@redhat.com>
 Thomas Knych <thomaswk@google.com>
-- 
2.21.3