Build from optee commit: 2101c108ef41637b2036c172d4f5f8144afefe6e
Main features:
1.rk3368 platform init
2.optimize crypto lib to support keystore.
3.using BoringSSL to generate RSA&ECC key.
4.rpmb: change the test key to RK defines.
5.toolchain: update toolchain version to gcc5.3.
Change-Id: I49919c59eee71f6496ebc6fc054b251950bcc5bd
Signed-off-by: Zhang Zhijie <zhangzj@rock-chips.com>