I.MX6 CAAM

/*********************************************************************************
 *                                I.MX6 CAAM 
 * 说明：
 *     稍微看了一下CAAM是什么，给OpenSSL用的加密加速器。
 *
 *                                              2017-10-24 深圳 南山平山村 曾剑锋
 ********************************************************************************/

一、参考文档：
    1. CAAM (Cryptographic Accelerator and Assurance Module)
        https://www.digi.com/resources/documentation/digidocs/90001546/reference/android/r_caam_android.htm
    2. iMX6 (CAAM, TrustZone) Hardware Security Blocks Use.
        https://community.nxp.com/thread/343151
    3. CAAM test application for iMX6
        https://community.nxp.com/thread/309499