Remove the perf package and add legacy handling.
[Thomas:
- improve the Config.in.legacy help text
- improve the comment explaining why we pass O= when building perf]
Signed-off-by: Romain Naour <romain.naour@openwide.fr>
Reviewed-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
