Propose Tom as maintainer for PLDM

Change-Id: I2feeef07d65eab4be83fee761d67c831917d2281
Signed-off-by: Tom Joseph <tomjoseph@in.ibm.com>
diff --git a/MAINTAINERS b/MAINTAINERS
index 1f8c0fa..f403164 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -61,3 +61,4 @@
 -------------------------
 
 M:  Deepak Kodihalli <dkodihal@linux.vnet.ibm.com> <dkodihal!>
+M:  Tom Joseph <tomjose@linux.vnet.ibm.com> <tomjose>