Upgrade Cheshire (64-bit CVA6)

[Xeratec]

This PR is based on #82 and upgrades Ceshire to a more recent version based on pulp-v2.0.0. As some changes for Chimera were required, these have been implemented on wiesep/chimera-pulp-v2.0.0 branch.

Dependencies

• Change axi dependency to use a fixed commit on the multicast branch
• Upgrade axi_riscv_atomics dependency from 0.8.2 to 0.8.3
• Upgrade clic dependency from 2.0.0 to 3.0.0
• Upgrade common_cells dependency from 1.38.0 to 1.39.0
• Upgrade register_interface dependency from 0.4.6 to 0.4.7
• Upgrade scm dependency from 1.2.0 to 1.3.0
• Upgrade fpnew dependency from pulp-v0.1.3 to pulp-v0.2.3
• Upgrade hyperbus dependency to the latest commit on the aottaviano/nonfree branch
• Upgrade memory_island dependency to the latest commit on the main branch
• Upgrade cheshire dependency from the scheremo/convolve branch to the wiesep/chimera-pulp-v2.0.0 branch

Changes

• Change CHS_XLEN to 64
• Add MemIslRegionLength parameter
• Change Cheshire AxiDataWidth to 64
• Change fast preload functionality to handle 64-bit AXI
• Use cv64a6_imafdchsclic_sv39_wb instead of cv32a6_convolve

ToDO

• Sanity check on the changes on Cheshire (wiesep/chimera-pulp-v2.0.0)
• Make sure cheshire commit hash is up-to-date