security_policy: fix five arg thunk and always install all possible policies
security_policy: fix five arg thunk and always install all possible policies

Chances are there's some platform that implements security2 but actually has
the Authenticode checker in the original security policy.  For this case, make
sure we install both security policy handlers.

Experiment shows that arg5 is at 0x28(%rsp) not 32(%rsp).

Signed-off-by: James Bottomley <1acebbdca565c7b6b638bdc23b58b5610d1a56b8@Parallels.com>

marineam/efitools,msekletar/efitools,msekletar/efitools,mjg59/efitools,mjg59/efitools,marineam/efitools,mjg59/efitools,mjg59/efitools,msekletar/efitools,msekletar/efitools,marineam/efitools,marineam/efitools