default or selected kernelversion does not have config value CONFIG_ATARI_BIONET.
Result is shown for kernelversion 5.4.123

BioNet-100 support

modulename: atari_bionet.ko

configname: CONFIG_ATARI_BIONET

Linux Kernel Configuration
└─>Networking support
└─>Ethernet (10 or 100Mbit)
└─>BioNet-100 support
In linux kernel since version 2.6.12  
Say Y to include support for BioData's BioNet-100 Ethernet adapter
for the ACSI port. The driver works (has to work...) with a polled
I/O scheme, so it's rather slow :-(

source code:
depends
CONFIG_ATARI
CONFIG_ATARI_ACSI
CONFIG_BROKEN
CONFIG_NETDEVICES
CONFIG_NET_ETHERNET
NOT CONFIG_UML