Ckuchta msft mci init

[clayton8]

• Add MCI to caliptra-ss repo
• Created a top which has an AXI SUB and MCU SRAM control logic
• Some of the MCU SRAM control signals are left tied off due to MCI CSRs not in yet.
• Data path from MCI Top -> AXI SUB -> MCU SRAM is complete but unverified
• This is not integrated into caliptra-ss integration model

[linux-foundation-easycla]

The committers listed above are authorized under a signed CLA.

• ✅ login: clayton8 (0da2fd2, 0bc3e79, bdf2864, 59a1609)
• ✅ login: calebofearth / name: Caleb (e0b511d, ac778ff, 88b89d5, 0708cee, 82e59fc, 060bbfd, aad8605, 9911c2b)