sanders: qcom bsp - display specific flag

This flag enables the QCOM specific display features

Change-Id: Iba7409c7e3743de846a7fb8bfcc7ad0b80985409
CRs-Fixed: 2043662

BoardConfig.mk

@@ -154,6 +154,7 @@ TARGET_USES_ION := true
 TARGET_USES_HWC2 := true
 TARGET_USES_OVERLAY := true
 TARGET_USES_NEW_ION_API := true
+TARGET_USES_QCOM_DISPLAY_BSP := true
 USE_OPENGL_RENDERER := true
 MAX_EGL_CACHE_KEY_SIZE := 12*1024
 MAX_EGL_CACHE_SIZE := 2048*1024