MAINTAINERS: Move HiSilicon TRNG V2 driver

Move HiSilicon TRNG V2 driver into 'drivers/crypto/hisilicon/trng'
with some updating on 'MAINTAINERS'.

Signed-off-by: Weili Qian <qianweili@huawei.com>
Reviewed-by: Zaibo Xu <xuzaibo@huawei.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

MAINTAINERS

@@ -7999,7 +7999,7 @@ F:	drivers/staging/hikey9xx/
 HISILICON TRUE RANDOM NUMBER GENERATOR V2 SUPPORT
 M:	Zaibo Xu <xuzaibo@huawei.com>
 S:	Maintained
-F:	drivers/char/hw_random/hisi-trng-v2.c
+F:	drivers/crypto/hisilicon/trng/trng.c
 
 HISILICON V3XX SPI NOR FLASH Controller Driver
 M:	John Garry <john.garry@huawei.com>