message: [openwrt] set `OT_TARGET_OPENWRT` option value as `OTBR_OPENWRT`
diff: @@ -42,6 +42,7 @@ if (NOT OT_THREAD_VERSION EQUAL "1.1")
  endif()
  set(OT_SLAAC ON CACHE BOOL "enable SLAAC" FORCE)
  set(OT_TREL ${OTBR_TREL} CACHE BOOL "enable TREL" FORCE)
  +set(OT_TARGET_OPENWRT $(OTBR_OPENWRT) CACHE BOOL "target on OpenWRT" FORCE)
  if (NOT OT_LOG_LEVEL)
  if (CMAKE_BUILD_TYPE STREQUAL "Debug")
  