[PATCH, committed] Add myself to MAINTAINERS

[Kito Cheng]

ChangeLog:

2019-07-08  Kito Cheng  <kito.ch...@sifive.com>

        * MAINTAINERS (Write After Approval): Add myself.

--- MAINTAINERS (revision 273194)
+++ MAINTAINERS (revision 273195)
@@ -651,6 +651,7 @@
Jon Ziegler                                    <j...@apple.com>
Roman Zippel                                   <zip...@linux-m68k.org>
Josef Zlomek                                   <josef.zlo...@email.cz>
+Kito Cheng                                     <kito.ch...@sifive.com>

                       Bug database only accounts