MAINTAINERS: Add maintainer for HiSilicon TRNG V2 driver

Here adds maintainer information for HiSilicon TRNG V2 driver.
Signed-off-by: Zaibo Xu <xuzaibo@huawei.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

MAINTAINERS

@@ -7389,6 +7389,11 @@ W:	http://www.hisilicon.com
 S:	Maintained
 F:	drivers/net/ethernet/hisilicon/hns3/
 
+HISILICON TRUE RANDOM NUMBER GENERATOR V2 SUPPORT
+M:	Zaibo Xu <xuzaibo@huawei.com>
+S:	Maintained
+F:	drivers/char/hw_random/hisi-trng-v2.c
+
 HISILICON LPC BUS DRIVER
 M:	john.garry@huawei.com
 W:	http://www.hisilicon.com