KVM: arm64: Move pkvm_vcpu_init_traps() to init_pkvm_hyp_vcpu()

Move pkvm_vcpu_init_traps() to the initialization of the
hypervisor's vcpu state in init_pkvm_hyp_vcpu(), and remove the
associated hypercall.

In protected mode, traps need to be initialized whenever a VCPU
is initialized anyway, and not only for protected VMs. This also
saves an unnecessary hypercall.

Signed-off-by: Fuad Tabba <tabba@google.com>
Link: https://lore.kernel.org/r/20241018074833.2563674-2-tabba@google.com


Signed-off-by: Oliver Upton <oliver.upton@linux.dev>