utest: integrate config option for utest of klibc

Signed-off-by: Chen Wang <unicorn_wang@outlook.com>

Kconfig.utestcases

@@ -19,6 +19,8 @@ rsource "examples/utest/testcases/tmpfs/Kconfig"
 rsource "examples/utest/testcases/smp_call/Kconfig"
 rsource "examples/utest/testcases/perf/Kconfig"
 
+rsource "src/klibc/utest/Kconfig"
+
 endif
 
 endmenu

src/klibc/Kconfig

@@ -250,9 +250,4 @@ menu "klibc options"
             default n
     endmenu # rt_strnlen options
 
-    config RT_UTEST_TC_USING_KLIBC
-        bool "Enable klibc utest cases"
-        select RT_USING_UTEST
-        default n
-
 endmenu

src/klibc/utest/Kconfig

@@ -0,0 +1,4 @@
+config RT_UTEST_TC_USING_KLIBC
+    bool "Enable klibc utest cases"
+    select RT_USING_UTEST
+    default n