Register Parallel/LPC/FWH programmers the same way SPI programmers are registered

All programmers are now calling programmer registration functions and
direct manipulations of buses_supported are not needed/possible anymore.

Note: Programmers without parallel/LPC/FWH chip support should not call
register_par_programmer().

Additional fixes:
Set max_rom_decode.parallel for drkaiser.
Remove abuse of programmer_map_flash_region in it85spi.
Annotate several FIXMEs in it85spi.

Corresponding to flashrom svn r1463.

Signed-off-by: Carl-Daniel Hailfinger <c-d.hailfinger.devel.2006@gmx.net>
Acked-by: Michael Karcher <flashrom@mkarcher.dialup.fu-berlin.de>
diff --git a/atahpt.c b/atahpt.c
index 3451342..6252865 100644
--- a/atahpt.c
+++ b/atahpt.c
@@ -40,6 +40,17 @@
 	{},
 };
 
+static const struct par_programmer par_programmer_atahpt = {
+		.chip_readb		= atahpt_chip_readb,
+		.chip_readw		= fallback_chip_readw,
+		.chip_readl		= fallback_chip_readl,
+		.chip_readn		= fallback_chip_readn,
+		.chip_writeb		= atahpt_chip_writeb,
+		.chip_writew		= fallback_chip_writew,
+		.chip_writel		= fallback_chip_writel,
+		.chip_writen		= fallback_chip_writen,
+};
+
 static int atahpt_shutdown(void *data)
 {
 	/* Flash access is disabled automatically by PCI restore. */
@@ -61,10 +72,11 @@
 	reg32 |= (1 << 24);
 	rpci_write_long(pcidev_dev, REG_FLASH_ACCESS, reg32);
 
-	buses_supported = BUS_PARALLEL;
-
 	if (register_shutdown(atahpt_shutdown, NULL))
 		return 1;
+
+	register_par_programmer(&par_programmer_atahpt, BUS_PARALLEL);
+
 	return 0;
 }