KVM: arm64: Remove FFA_MSG_SEND_DIRECT_REQ from the denylist

The denylist is blocking the 32 bit version of the call but is allowing
the 64 bit version of it. There is no reason for blocking only one of
them and the hypervisor should support these calls.

Signed-off-by: Sebastian Ene <sebastianene@google.com>
Link: https://lore.kernel.org/r/20240411135700.2140550-1-sebastianene@google.com


Signed-off-by: Marc Zyngier <maz@kernel.org>