It prepares ground for PHB5 which has different values.

Reviewed-by: Daniel Henrique Barboza <danielhb413@gmail.com>
Reviewed-by: Frederic Barrat <fbarrat@linux.ibm.com>
Signed-off-by: Cédric Le Goater <clg@kaod.org>
Message-Id: <20211213132830.108372-9-clg@kaod.org>
Signed-off-by: Cédric Le Goater <clg@kaod.org>