nb/intel/ironlake: Use MMCONF_BUS_NUMBER everywhere

Bootblock enabling needs some special handling. Also, the definition of
the `get_pcie_bar` function is incorrect for Ironlake, so remove it.

With this patch, using 64 and 128 for MMCONF_BUS_NUMBER should work.
However, it has not been tested. Using 256 busses should still work.

Change-Id: Ic466ddc7b80f60af5cbff53583281440f02974c7
Signed-off-by: Angel Pons <th3fanbus@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/49761
Reviewed-by: Arthur Heymans <arthur@aheymans.xyz>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
diff --git a/src/northbridge/intel/ironlake/acpi/ironlake.asl b/src/northbridge/intel/ironlake/acpi/ironlake.asl
index a6e32da..73242e4 100644
--- a/src/northbridge/intel/ironlake/acpi/ironlake.asl
+++ b/src/northbridge/intel/ironlake/acpi/ironlake.asl
@@ -15,7 +15,7 @@
 		Memory32Fixed(ReadWrite, DEFAULT_MCHBAR,   0x00008000)
 		Memory32Fixed(ReadWrite, DEFAULT_DMIBAR,   0x00001000)
 		Memory32Fixed(ReadWrite, DEFAULT_EPBAR,    0x00001000)
-		Memory32Fixed(ReadWrite, CONFIG_MMCONF_BASE_ADDRESS, 0x04000000)
+		Memory32Fixed(ReadWrite, CONFIG_MMCONF_BASE_ADDRESS, CONFIG_MMCONF_LENGTH)
 		Memory32Fixed(ReadWrite, 0xfed20000, 0x00020000) // Misc ICH
 		Memory32Fixed(ReadWrite, 0xfed40000, 0x00005000) // Misc ICH
 		Memory32Fixed(ReadWrite, 0xfed45000, 0x0004b000) // Misc ICH