How about this? Seems to work, or at least it builds for me.
Index: mainboard/pcengines/Kconfig =================================================================== --- mainboard/pcengines/Kconfig (Revision 560) +++ mainboard/pcengines/Kconfig (Arbeitskopie) @@ -31,6 +31,7 @@ select NORTHBRIDGE_AMD_GEODELX select SOUTHBRIDGE_AMD_CS5536 select SUPERIO_WINBOND_W83627HF + select COMPRESSION_NRV2B help PC Engines ALIX1.C.
Yes, this one is per-board instead of per-chipset, but well...
Uwe.