target/riscv: remove capital 'Z' CPU properties

These properties were deprecated in QEMU 8.2, commit 8043effd9b.

Signed-off-by: Daniel Henrique Barboza <dbarboza@ventanamicro.com>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Message-ID: <20250530134608.1806922-1-dbarboza@ventanamicro.com>
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
3 files changed