Add myself and Venkatesh Yadav Abbarapu as code owners for Xilinx platforms

Jolly left the company and Siva (DP) has moved to different possition
that's why it is necessary to change code ownership.

Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Change-Id: I546d9a0f7a2abd0c7a65be807725bc609160f3b2
diff --git a/docs/about/maintainers.rst b/docs/about/maintainers.rst
index ab2d3f9..f500938 100644
--- a/docs/about/maintainers.rst
+++ b/docs/about/maintainers.rst
@@ -529,8 +529,10 @@
 
 Xilinx platform port
 ^^^^^^^^^^^^^^^^^^^^
-:M: Siva Durga Prasad Paladugu <siva.durga.paladugu@xilinx.com>
-:G: `sivadur`_
+:M: Michal Simek <michal.simek@xilinx.com>
+:G: `michalsimek`_
+:M: Venkatesh Yadav Abbarapu <venkatesh.abbarapu@xilinx.com>
+:G: `venkatesh`_
 :F: docs/plat/xilinx-zynqmp.rst
 :F: plat/xilinx/
 
@@ -614,6 +616,7 @@
 .. _ldts: https://github.com/ldts
 .. _marex: https://github.com/marex
 .. _masahir0y: https://github.com/masahir0y
+.. _michalsimek: https://github.com/michalsimek
 .. _mmind: https://github.com/mmind
 .. _mtk09422: https://github.com/mtk09422
 .. _niej: https://github.com/niej
@@ -624,13 +627,13 @@
 .. _sandrine-bailleux-arm: https://github.com/sandrine-bailleux-arm
 .. _sgorecha: https://github.com/sgorecha
 .. _shawnguo2: https://github.com/shawnguo2
-.. _sivadur: https://github.com/sivadur
 .. _smaeul: https://github.com/smaeul
 .. _soby-mathew: https://github.com/soby-mathew
 .. _thloh85-intel: https://github.com/thloh85-intel
 .. _thomas-arm: https://github.com/thomas-arm
 .. _TonyXie06: https://github.com/TonyXie06
 .. _vwadekar: https://github.com/vwadekar
+.. _venkatesh: https://github.com/vabbarap
 .. _Yann-lms: https://github.com/Yann-lms
 .. _manish-pandey-arm: https://github.com/manish-pandey-arm
 .. _mardyk01: https://github.com/mardyk01