IDCODE 0x0F8031CF (mask 0x0FFFFFFF, top nibble = revision) and IR
length 8 read from bsdl_files/m2gl010t-fg484.bsd. No proxy or IR
opcodes: IGLOO2 internal flash is programmed by playing a Libero SVF,
not via the Xilinx BSCAN-proxy SPI path, so those fields don't apply.
Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>