If a Handheld gaming Console BIOS is similar to a PC Motherboard BIOS then Adrenaline shouldn't affect or change anything in BIOS itself. Adrenaline is a graphic driver.
BIOS, normally in a PC Motherboard, is the deciding factor on how much vRAM can be assigned to the APU Integrated Graphics. No Windows software can change that setting like Adrenaline. In the older laptops, 2GB used to be the maximum vRAM BIOS can assign to the Integrated Graphics on the processor but also depending on how much System Memory RAM you have installed.
But you are talking about a Handheld gaming console so I don't know if the console's BIOS is similar to a PC Motherboard's BIOS.
Normally, if your vRAM is assigned the least amount, around 512MB, you can still run all your apps and games because Windows will automatically allocate, temporarily, as much System Memory your Integrated Graphics needs to run those games. Once you close the app or game Windows will return the allocated IGPU vRAM back to System RAM.
I would open a Lenovo Support ticket or Chat session and ask them directly to see what they say.