[libc] Disable freelist test on NVPTX temporarily

Summary:
This test fails due to alignment issues, it's likely that it's
misaligned on other targets too and they just don't crash on it.
@PiJoules maybe we should run this with ubsan?

Author: jhuber6

libc/test/src/__support/CMakeLists.txt

@@ -13,17 +13,19 @@ add_libc_test(
     libc.src.string.memcpy
 )
 
-add_libc_test(
-  freelist_test
-  SUITE
-    libc-support-tests
-  SRCS
-    freelist_test.cpp
-  DEPENDS
-    libc.src.__support.CPP.array
-    libc.src.__support.CPP.span
-    libc.src.__support.freelist
-)
+if(NOT LIBC_TARGET_ARCHITECTURE_IS_NVPTX)
+  add_libc_test(
+    freelist_test
+    SUITE
+      libc-support-tests
+    SRCS
+      freelist_test.cpp
+    DEPENDS
+      libc.src.__support.CPP.array
+      libc.src.__support.CPP.span
+      libc.src.__support.freelist
+  )
+endif()
 
 if(LLVM_LIBC_FULL_BUILD)
   add_libc_test(