internal: Move laptop_ok into board_cfg

Due to how internal is structured around chipset_flash_enable()
entry we need to prepare a crafted programmer_cfg that contains
a board_enable substructure with data derived from the board_enable
subsystem. While this is certainly not perfection, it does make
clear the relationships between board_enable into chipset_flash_enable
and subsequently the overall internal programmer initialisation
in a RAII fashion at the type level over closure upon global
state that is impossible to reason about.

Also flip predicate in report_nonwl_laptop_detected() and
return early with the trivial base-case.

TEST=`$ sudo ./flashrom -p internal --flash-name`.

Change-Id: I459215253845c2af73262943ce91a36464e9eb06
Signed-off-by: Edward O'Callaghan <quasisec@google.com>
Reviewed-on: https://review.coreboot.org/c/flashrom/+/73456
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Sam McNally <sammc@google.com>

board_enable.c

@@ -2293,7 +2293,7 @@ static int p2_not_a_laptop(struct board_cfg *cfg)
 static int p2_whitelist_laptop(struct board_cfg *cfg)
 {
 	cfg->is_laptop = 1;
-	g_laptop_ok = true;
+	cfg->laptop_ok = true;
 	msg_pdbg("Whitelisted laptop detected.\n");
 	return 0;
 }