Following the Linux kernel equivalent patch posted on
linux-mips@vger.kernel.org [*], update Paul Burton email
address to avoid emails bouncing.

[*] 'MAINTAINERS: Use @kernel.org address for Paul Burton'
https://lore.kernel.org/patchwork/patch/1140341/



Cc: Paul Burton <paulburton@kernel.org>
Suggested-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Acked-by: Paul Burton <paulburton@kernel.org>
Message-Id: <20200707022544.24925-1-f4bug@amsat.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>