bios_options data structure mismatch causing micropython build fail

[ShashankVM]

bios_options is a list in https://github.com/enjoy-digital/litex/blob/ddcac462c3420f01a4f415c1d6bd7e1001b8227d/litex/soc/integration/builder.py#L81 but used as a dictionary in

litex-buildenv/make.py

Line 142 in 690901d

builder.bios_options = {}

. This mismatch in data structure is causing micropython build to fail.

[tcal-x]

I encounter this issue as well.