vmw_balloon: update maintainers list

Julien will be replacing me as the vmw_balloon maintainer.

Cc: Julien Freche <jfreche@vmware.com>
Signed-off-by: Xavier Deguillard <xdeguillard@vmware.com>
Signed-off-by: Nadav Amit <namit@vmware.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

MAINTAINERS

@@ -16010,7 +16010,7 @@ F:	drivers/vme/
 F:	include/linux/vme*
 
 VMWARE BALLOON DRIVER
-M:	Xavier Deguillard <xdeguillard@vmware.com>
+M:	Julien Freche <jfreche@vmware.com>
 M:	Nadav Amit <namit@vmware.com>
 M:	"VMware, Inc." <pv-drivers@vmware.com>
 L:	linux-kernel@vger.kernel.org