target/riscv/cpu.h: use 'vlenb' in vext_get_vlmax()

Rename the existing 'sew' variable to 'vsew' for extra clarity.

Signed-off-by: Daniel Henrique Barboza <dbarboza@ventanamicro.com>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Message-ID: <20240122161107.26737-11-dbarboza@ventanamicro.com>
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
1 file changed