utest: UTEST_MM_LWP_TC -> RT_UTEST_MM_LWP

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

examples/utest/testcases/mm/Kconfig

@@ -7,7 +7,7 @@ menu "Memory Management Subsytem Testcase"
         The test covers the Memory Management APIs under the
         `components/mm` and `libcpu/[mmu.*|tlb.*|cache.*]`
 
-    config UTEST_MM_LWP_TC
+    config RT_UTEST_MM_LWP
     bool "Enable Utest for MM API in lwp"
     default n
     help

examples/utest/testcases/mm/SConscript

@@ -17,7 +17,7 @@ if GetDepend(['RT_UTEST_MM_API', 'RT_USING_SMART']):
 if GetDepend(['RT_UTEST_MM_API', 'RT_USING_MEMBLOCK']):
         src += ['mm_memblock_tc.c']
 
-if GetDepend(['UTEST_MM_LWP_TC', 'RT_USING_SMART']):
+if GetDepend(['RT_UTEST_MM_LWP', 'RT_USING_SMART']):
     src += ['mm_lwp_tc.c']
 
 group = DefineGroup('utestcases', src, depend = ['RT_USING_UTESTCASES'], CPPPATH = CPPPATH)