docs(maintainers): update marvell maintainer

Add Jaiprakash Singh as marvell maintainer

Change-Id: Ica924c0502b0a271b0368255841ef413391de959
Signed-off-by: Jaiprakash Singh <jaiprakashs@marvell.com>
diff --git a/docs/about/maintainers.rst b/docs/about/maintainers.rst
index a8f1676..12c0f36 100644
--- a/docs/about/maintainers.rst
+++ b/docs/about/maintainers.rst
@@ -653,8 +653,8 @@
 
 Marvell platform ports and SoC drivers
 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
-:|M|: Konstantin Porotchkin <kostap@marvell.com>
-:|G|: `kostapr`_
+:|M|: Jaiprakash Singh <jaiprakashs@marvell.com>
+:|G|: `sjaypee208`_
 :|F|: docs/plat/marvell/
 :|F|: plat/marvell/
 :|F|: drivers/marvell/
@@ -1128,6 +1128,7 @@
 .. _vishnu-banavath: https://github.com/vishnu-banavath
 .. _vwadekar: https://github.com/vwadekar
 .. _Yann-lms: https://github.com/Yann-lms
+.. _sjaypee208: https://github.com/sjaypee208
 
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