Enable secure display support

configname: CONFIG_DRM_AMD_SECURE_DISPLAY

Linux Kernel Configuration
└─>Device Drivers
└─>Graphics support
└─>Direct Rendering Manager (XFree86 4.1.0 and higher DRI support)
└─>Display Engine Configuration
└─>Enable secure display support
In linux kernel since version 5.2 (release Date: 2019-07-07)  
Choose this option if you want to support secure display

This option enables the calculation of crc of specific region via
debugfs. Cooperate with specific DMCU FW.