qapi: make Xen event commands unconditionally available

qapi: make Xen event commands unconditionally available

This removes the TARGET_I386 condition from the Xen event channel
commands, moving them to the recently introduced misc-i386.json
QAPI file, given they are inherantly i386 specific commands.

Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
Acked-by: David Woodhouse <dwmw@amazon.co.uk>
Signed-off-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Message-ID: <20250522190542.588267-7-pierrick.bouvier@linaro.org>
Reviewed-by: Markus Armbruster <armbru@redhat.com>