Add support for Hisilicon Hi3519AV100 DEMO board

Hi3519AV100 is a high-performance and low-power 4K
Smart IP Camera SoC designed for IP cameras, action cameras,
panoramic cameras, rear view mirrors,

Add support for Hisilicon Hi3519AV100 DEMO board

Hi3519AV100 is a high-performance and low-power 4K
Smart IP Camera SoC designed for IP cameras, action cameras,
panoramic cameras, rear view mirrors, and UAVs. Hi3519A
V100 introduces H.265/H.264 encoding and decoding, with
performance up to 4K x 2K@60 fps and 1080p@240 fps.
For more information:
http://www.hisilicon.com/en/Products/ProductList/Surveillance

This patch has been tested using the following step,
1. Patch the uboot and Linux kernel with OP-TEE support if required
2. build step:
(1) make CROSS_COMPILE=arm-himix200-linux- PLATFORM=hisilicon
PLATFORM_FLAVOR=hi3519av100_demo (OPTEE-OS build)

(2) make CROSS_COMPILE_HOST=arm-himix200-linux- (OPTEE_CLIENT build)

(3) cross_compile openssl and replace optee_test/host/libopenssl

(4) make CROSS_COMPILE_HOST=arm-himix200-linux-
CROSS_COMPILE_TA=arm-himix200-linux-
TA_DEV_KIT_DIR=../optee_os/out/arm-plat-hisilicon/export-ta_arm32
COMPILE_NS_USER=32 (OPTEE_TEST build)

3. mkimage -A arm -T kernel -O tee -C none -d tee.bin uTee.optee
4. Boot setting in uboot:
nand read 0x22007fc0 0x100000 0x400000; /* load kernel */
tftp 0x30000000 uTee.optee;bootm 0x30000000;
5. after Linux startup, run daemon tee-supplicant
6. run xtest

Acked-by: Etienne Carriere <etienne.carriere@linaro.org>
Acked-by: Jerome Forissier <jerome.forissier@linaro.org>
Signed-off-by: Zeng Tao <prime.zeng@hisilicon.com>

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