CONFIG migration quirk

[Simon Glass]

Hi Tom,

If I:

1. Revert 9ef3ba85bf3 kbuild: Remove checking for adhoc CONFIG symbols
2. rm scripts/config_whitelist.txt
3. run ./scripts/build-whitelist.sh

Then I get about 930 unmirgrated CONFIG options:

$ wc scripts/config_whitelist.txt
  930   930 21243 scripts/config_whitelist.txt

It seems that some of them are still there. I noticed this when
looking at CONFIG_VIDEO_FONT_4X6

Am I missing something?

Regards,
Simon