fix menuconfig warning on Kconfig

add type of config

diff --git a/os/kernel/Kconfig b/os/kernel/Kconfig
index 3de7feb..ed4903d 100644 (file)
--- a/os/kernel/Kconfig
+++ b/os/kernel/Kconfig
@@ -1043,6 +1043,7 @@ config PREAPP_STACKSIZE
                that is started as soon as the OS completes its initialization.
 
 config MPU_STACKGAURD
+       bool "protect thread stack"
        default n
 
 config PTHREAD_STACK_MIN