soong: Add Qcom_bsp_legacy config

Change-Id: Ib9284864e77a18e07f048a4afd26f2da1b6c1485
diff --git a/build/soong/android/variable.go b/build/soong/android/variable.go
index c6dc7d7..c58afa4 100644
--- a/build/soong/android/variable.go
+++ b/build/soong/android/variable.go
@@ -19,6 +19,10 @@
 	Cant_reallocate_omx_buffers struct {
 		Cflags []string
 	}
+
+	Qcom_bsp_legacy struct {
+		Cflags []string
+	}
 }
 
 type ProductVariables struct {
@@ -30,4 +34,5 @@
 	QTIDisplayPath          *string `json:",omitempty"`
 	QTIMediaPath            *string `json:",omitempty"`
 	Cant_reallocate_omx_buffers *bool `json:",omitempty"`
+	Qcom_bsp_legacy         *bool `json:",omitempty"`
 }