[scudo] Attempt to re-enable the valloc test on armhf

[cryptoad]

Summary

It used to fail on the bots, but I could not repro it locally. So turn it back
on to try and see if it still fails and maybe get to the heart of it.

test/scudo/valloc.c

 // RUN: %clang_scudo %s -o %t
 // RUN:                                                 %run %t valid   2>&1
 // RUN:                                             not %run %t invalid 2>&1
 // RUN: %env_scudo_opts=allocator_may_return_null=1     %run %t invalid 2>&1
-// UNSUPPORTED: android, armhf-linux
+// UNSUPPORTED: android
 
 // Tests that valloc and pvalloc work as intended.
 
 #include <assert.h>
 #include <errno.h>
 #include <malloc.h>
 #include <stdint.h>
 #include <string.h>