soong: add new soong variable BoardUsesQTIHardware

read value from BOARD_USES_QTI_HARDWARE

Change-Id: Ie01e6ced0954ea005222c61b2a512deacb3e7532
diff --git a/build/soong/soong_config.mk b/build/soong/soong_config.mk
index 1fa7063..dc3715d 100644
--- a/build/soong/soong_config.mk
+++ b/build/soong/soong_config.mk
@@ -6,4 +6,5 @@
 	echo '    "Uses_media_extensions": $(if $(filter true,$(TARGET_USES_MEDIA_EXTENSIONS)),true,false),'; \
 	echo '    "Needs_text_relocations": $(if $(filter true,$(TARGET_NEEDS_PLATFORM_TEXT_RELOCATIONS)),true,false),'; \
 	echo '    "Mtk_hardware": $(if $(filter true,$(BOARD_USES_MTK_HARDWARE)),true,false),'; \
+	echo '    "BoardUsesQTIHardware":  $(if $(BOARD_USES_QTI_HARDWARE),true,false),';  \
 	echo '') > $(SOONG_VARIABLES_TMP)