CONFIG_MICROSOFT_MANA is not available for thedefaultarchitecture x86.
Result is shown for architecture 64BIT

Microsoft Azure Network Adapter (MANA) support

modulename: mana.ko

configname: CONFIG_MICROSOFT_MANA

Linux Kernel Configuration
└─>Device Drivers
└─>Network device support
└─>Ethernet driver support
└─>Microsoft Azure Network Adapter (MANA) support
In linux kernel since version 4.14.326 (release Date: 2023-09-23)  
This driver supports Microsoft Azure Network Adapter (MANA).
So far, the driver is only supported on X86_64.

To compile this driver as a module, choose M here.
The module will be called mana.

source code: