hw/misc/aspeed_hace: Fix boot issue in the Crypto Manager Self Test

hw/misc/aspeed_hace: Fix boot issue in the Crypto Manager Self Test

Currently, it does not support the CRYPT command. Instead, it only sends an
interrupt to notify the firmware that the crypt command has completed.
It is a temporary workaround to resolve the boot issue in the Crypto Manager
Self Test.

Introduce a new "use_crypt_workaround" class attribute and set it to true in
the AST2700 HACE model to enable this workaround by default for AST2700.

Signed-off-by: Jamin Lin <jamin_lin@aspeedtech.com>
Reviewed-by: Cédric Le Goater <clg@redhat.com>
Link: https://lore.kernel.org/qemu-devel/20250225075622.305515-5-jamin_lin@aspeedtech.com
Signed-off-by: Cédric Le Goater <clg@redhat.com>