Enable DSI 28nm PHY driver in MSM DRM

configname: CONFIG_DRM_MSM_DSI_28NM_PHY

Linux Kernel Configuration
└─>Device Drivers
└─>Graphics support
└─>Enable DSI 28nm PHY driver in MSM DRM
In linux kernel since version 4.1 (release Date: 2015-06-21)  
Choose this option if the 28nm DSI PHY is used on the platform.