programmer_table: convert entries to pointers

Allows us to move the individual entries into their respective
driver files.

Change-Id: Ifbb0ee4db5a85b1cd2afeafe4dca838579f79878
Signed-off-by: Thomas Heijligen <thomas.heijligen@secunet.de>
Original-Reviewed-on: https://review.coreboot.org/c/flashrom/+/52945
Original-Reviewed-by: Nico Huber <nico.h@gmx.de>
7 files changed