Implemented crtc dpms handling via drmmode_crtc_dpms()
Implemented crtc dpms handling via drmmode_crtc_dpms()

Change-Id: I8fd0ab095aec0599368ecb3a26832fdc3b2568f9

xin3liang/xf86-video-armsoc,apxii/xf86-video-armsoc,sbambrough/xf86-video-armsoc,apxii/xf86-video-armsoc,mmind/xf86-video-armsoc,sbambrough/xf86-video-armsoc,OtherCrashOverride/armsoc-hardkernel,freedesktop-unofficial-mirror/xorg__driver__xf86-video-armsoc,mmind/xf86-video-armsoc,xin3liang/xf86-video-armsoc,singulared/xf86-video-armsoc,singulared/xf86-video-armsoc,freedesktop-unofficial-mirror/xorg__driver__xf86-video-armsoc,OtherCrashOverride/armsoc-hardkernel