Update properties parsing for app manifest and device manifest files (#544)

Firmware/CMakeLists.txt

@@ -22,7 +22,7 @@ set(DEVICETREE_LOCATION "${PROJECT_ROOT}/Devices/${TACTILITY_DEVICE_ID}")
 # Fixes the sdkconfig bluetooth enable options from getting nuked on non-P4+C6 builds when idf build runs
 if (DEFINED ENV{ESP_IDF_VERSION})
     file(READ "${DEVICETREE_LOCATION}/device.properties" device_properties_content)
-    if (device_properties_content MATCHES "bluetooth=true")
+    if (device_properties_content MATCHES "hardware\\.bluetooth=true")
         list(APPEND REQUIRES_LIST bt)
     endif()
 endif()