zenfone9: Build Display Hal from source

Change-Id: I912e76f4777b565db690c49194afedc30fc9f33e
diff --git a/BoardConfig.mk b/BoardConfig.mk
index 4f54857..9622f2b 100755
--- a/BoardConfig.mk
+++ b/BoardConfig.mk
@@ -103,7 +103,8 @@
 endif
 
 # Display
-TARGET_USES_HWC2 := true
+SOONG_CONFIG_qtidisplay_displayconfig_enabled := true
+SOONG_CONFIG_qtidisplaycommonsys_displayconfig_enabled := true
 
 # DRM
 TARGET_ENABLE_MEDIADRM_64 := true