soong: add sdclang

Change-Id: Ib2b955f76ed15934b11fa2f7b58cf71ea772077a
diff --git a/build/soong/android/variable.go b/build/soong/android/variable.go
index d2f2e5b..b83e953 100644
--- a/build/soong/android/variable.go
+++ b/build/soong/android/variable.go
@@ -15,4 +15,5 @@
 	Healthd_use_battery_info  *bool `json:",omitempty"`
 	TargetNeedsHWCOnFirstRef  *bool `json:",omitempty"`
 	Uses_metadata_as_fde_key  *bool `json:",omitempty"`
+	Target_use_sdclang        *bool `json:",omitempty"`
 }
diff --git a/build/soong/soong_config.mk b/build/soong/soong_config.mk
index ab056c5..f243772 100644
--- a/build/soong/soong_config.mk
+++ b/build/soong/soong_config.mk
@@ -6,6 +6,8 @@
 $(call add_json_bool, Healthd_use_battery_info, $(filter true,$(HEALTHD_USE_BATTERY_INFO)))
 $(call add_json_bool, TargetNeedsHWCOnFirstRef, $(filter true,$(TARGET_NEEDS_HWC_ONFIRSTREF)))
 $(call add_json_bool, Uses_metadata_as_fde_key, $(filter true,$(TARGET_USES_METADATA_AS_FDE_KEY)))
+$(call add_json_bool, Target_use_sdclang,       $(filter true,$(TARGET_USE_SDCLANG)))
+
 
 # This causes the build system to strip out the last comma in our nested struct, to keep the JSON valid.
 _contents := $(_contents)__SV_END