vendor: Add TARGET_OMX_LEGACY_RESCALING flag

Change-Id: Ib755dda84a9d5a1994da2dccdb3571c45c95b6ce
diff --git a/build/soong/android/variable.go b/build/soong/android/variable.go
index e73b350..4c5b29d 100644
--- a/build/soong/android/variable.go
+++ b/build/soong/android/variable.go
@@ -27,6 +27,9 @@
 	Qti_flac_decoder struct {
 		Cflags []string
 	}
+	Use_legacy_rescaling struct {
+		Cflags []string
+	}
 }
 
 type ProductVariables struct {
@@ -40,4 +43,5 @@
 	Cant_reallocate_omx_buffers *bool `json:",omitempty"`
 	Qcom_bsp_legacy         *bool `json:",omitempty"`
 	Qti_flac_decoder        *bool `json:",omitempty"`
+	Use_legacy_rescaling    *bool `json:",omitempty"`
 }
diff --git a/build/soong/soong_config.mk b/build/soong/soong_config.mk
index 8987c71..d2c7662 100644
--- a/build/soong/soong_config.mk
+++ b/build/soong/soong_config.mk
@@ -14,6 +14,7 @@
 	echo '    "QTIMediaPath":  "$(call project-path-for,qcom-media)",';  \
 	echo '    "Cant_reallocate_omx_buffers":  $(if $(filter omap4,$(TARGET_BOARD_PLATFORM)),true,false),';  \
 	echo '    "Qcom_bsp_legacy":  $(if $(filter msm7x27a msm7x30 msm8660 msm8960,$(TARGET_BOARD_PLATFORM)),true,false),';  \
-	echo '    "Qti_flac_decoder":  $(if $(strip $(AUDIO_FEATURE_ENABLED_EXTN_FLAC_DECODER)),true,false)';  \
+	echo '    "Qti_flac_decoder":  $(if $(strip $(AUDIO_FEATURE_ENABLED_EXTN_FLAC_DECODER)),true,false),';  \
+	echo '    "Use_legacy_rescaling":  $(if $(strip $(TARGET_OMX_LEGACY_RESCALING)),true,false)';  \
 	echo '},'; \
 	echo '') > $(SOONG_VARIABLES_TMP)