fix: prevent AMO hangs on non-DRAM regions

[Chandana5599]

Description

AMO operations to non-DRAM regions such as Debug, ROM, and CLINT can hang indefinitely because these AXI slaves do not support atomic operations.

This change adds axi_atop_filter_intf between the AXI crossbar and these non-DRAM slaves. Unsupported atomic transactions are therefore filtered and completed with an AXI SLVERR instead of reaching peripherals that do not support ATOPs.

Changes

• Added an AXI ATOP filter for the Debug Module.
• Added an AXI ATOP filter for ROM.
• Added an AXI ATOP filter for CLINT.
• Kept the existing DRAM atomic-operation path unchanged.

Testing

• git diff --check passes.
• Verilator simulation could not be run locally because Verilator/WSL is unavailable in the current Windows environment.

Fixes #3608