soong: add TARGET_SPECIFIC_HEADER_PATH

$(call add_json_str,  BtConfigIncludeDir,                $(BOARD_BLUETOOTH_BDROID_BUILDCFG_INCLUDE_DIR))

$(call add_json_bool, Device_uses_hwc2,                  $(filter true,$(TARGET_USES_HWC2)))

$(call add_json_list, DeviceKernelHeaders,               $(TARGET_PROJECT_SYSTEM_INCLUDES))

$(call add_json_str,  TargetSpecificHeaderPath,          $(TARGET_SPECIFIC_HEADER_PATH))

$(call add_json_bool, DevicePrefer32BitExecutables,      $(filter true,$(TARGET_PREFER_32_BIT_EXECUTABLES)))

$(call add_json_str,  DeviceVndkVersion,                 $(BOARD_VNDK_VERSION))

$(call add_json_str,  Platform_vndk_version,             $(PLATFORM_VNDK_VERSION))