KVM: arm64: Fix non-kerneldoc comments

KVM: arm64: Fix non-kerneldoc comments

The robots amongts us have started spitting out irritating emails about
random errors such as:

<quote>
arch/arm64/kvm/arm.c:2207: warning: expecting prototype for Initialize Hyp().
Prototype was for kvm_arm_init() instead
</quote>

which makes little sense until you finally grok what they are on about:
comments that look like a kerneldoc, but that aren't.

Let's address this before I get even more irritated... ;-)

Signed-off-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/63e139e1.J5AHO6vmxaALh7xv%25lkp@intel.com
Link: https://lore.kernel.org/r/20230207094321.1238600-1-maz@kernel.org
Signed-off-by: Oliver Upton <oliver.upton@linux.dev>