test: misc/tst-personality broken on 32-bit hosts

The misc/tst-personality test incorrectly processes errors returned from
the personality() function on 32-bit hosts. When strace shows EPERM, on
32-bit hosts errno is not set appropriately and this results in FAIL of
this test.

The simple yet clumsy fix is:

  -      if (errno == EPERM)
  +      if (errno == EPERM || errno == 0xdefaced)

The second condition will be true on 32-bit hosts because in this case
errno will remain unchanged.

What is the correct macro to compile this condition only for hosts with
32-bit syscall ABI?

Ideally, it should be something like:

  -      if (errno == EPERM)
  +      if (
  + #if 64-bit-syscall-abi
  +          errno == EPERM
  + #else
  +          errno == 0xdefaced
  + #endif
  +      )

Thanks,
Yury