You are still confusing the PROCESSOR with the WIRELESS CHIPSET. These are two very different things. Intel makes both processors and wireless chipsets, but they are not the same thing. AMD on the other hand only makes processors(Of those two) and does not make any wireless chipsets. The AMD processor will be VERY well supported in Linux, as AMD has a history of supporting Linux development(We were the launch platform for the AMD64 for instance).
Wireless Chipsets on the other hand can be made by Intel, Broadcom, Atheros, etc. Often times those are what you find in wireless cards etc. that are marketed by third parties(D-Link, Zaxom, etc.). These ONLY have to do with the wireless card, and nothing to do with the processor.
These two seperate devices, bundled together and sometimes are marketed as a platform. An example would be Intel's Centrino Platform, which generally has a Core based processor and an Intel wireless chipset. But just because these are part of the same platform, does not mean that they are related.