KVM: arm64: Shuffle KVM_HOST_DATA_FLAG_* indices

KVM: arm64: Shuffle KVM_HOST_DATA_FLAG_* indices

There's a gap in the KVM_HOST_DATA_FLAG_* indices since the removal of
KVM_HOST_DATA_FLAG_HOST_SVE_ENABLED and
KVM_HOST_DATA_FLAG_HOST_SME_ENABLED in commits:

* 459f059be702 ("KVM: arm64: Remove VHE host restore of CPACR_EL1.ZEN")
* 407a99c4654e ("KVM: arm64: Remove VHE host restore of CPACR_EL1.SMEN")

Shuffle the indices to remove the gap, as Oliver requested at the time of
the removals:

  https://lore.kernel.org/linux-arm-kernel/Z6qC4qn47ONfDCSH@linux.dev/

There should be no functional change as a result of this patch.

Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Fuad Tabba <tabba@google.com>
Cc: Marc Zyngier <maz@kernel.org>
Cc: Mark Brown <broonie@kernel.org>
Cc: Oliver Upton <oliver.upton@linux.dev>
Cc: Will Deacon <will@kernel.org>
Tested-by: Fuad Tabba <tabba@google.com>
Reviewed-by: Fuad Tabba <tabba@google.com>
Reviewed-by: Mark Brown <broonie@kernel.org>
Link: https://patch.msgid.link/20260106173707.3292074-3-mark.rutland@arm.com
Signed-off-by: Marc Zyngier <maz@kernel.org>