MAINTAINERS: Add Jason as designated reviewer for TPM

Jason does an excellent job reviewing the TPM stuff, so we add him to
the designated reviewer list (with his consent :)

Signed-off-by: Jason Gunthorpe <jgunthorpe@obsidianresearch.com>
Signed-off-by: Peter Huewe <peterhuewe@gmx.de>
diff --git a/MAINTAINERS b/MAINTAINERS
index ddc5a8c..55b762e 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -9906,6 +9906,7 @@
 TPM DEVICE DRIVER
 M:	Peter Huewe <peterhuewe@gmx.de>
 M:	Marcel Selhorst <tpmdd@selhorst.net>
+R:	Jason Gunthorpe <jgunthorpe@obsidianresearch.com>
 W:	http://tpmdd.sourceforge.net
 L:	tpmdd-devel@lists.sourceforge.net (moderated for non-subscribers)
 Q:	git git://github.com/PeterHuewe/linux-tpmdd.git