nb/intel/ironlake/quickpath.c: Correct one value

Commit 56823f53dc6de5a804f7c88b9f24847133ddc876 (nb/intel/ironlake:
Rewrite early QPI init) rewrote this part, but the or-value is missing
one zero. Correct this magic value to align with MRC binaries.

Change-Id: Id7a6766b3f0fe415dea70cbc54afc30f808c8b16
Signed-off-by: Angel Pons <th3fanbus@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/51857
Reviewed-by: Patrick Rudolph <siro@das-labor.org>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
diff --git a/src/northbridge/intel/ironlake/quickpath.c b/src/northbridge/intel/ironlake/quickpath.c
index a3455db..82fc1e7 100644
--- a/src/northbridge/intel/ironlake/quickpath.c
+++ b/src/northbridge/intel/ironlake/quickpath.c
@@ -562,7 +562,7 @@
 		MCHBAR8_OR(0x2ca8, 1);
 
 	MCHBAR32_AND(0x1890, 0xfdffffff);
-	MCHBAR32_AND_OR(0x18b4, 0xffff6fff, 0x600);
+	MCHBAR32_AND_OR(0x18b4, 0xffff6fff, 0x6000);
 	MCHBAR32(0x18a4) = 0x22222222;
 	MCHBAR32(0x18a8) = 0x22222222;
 	MCHBAR32(0x18ac) = 0x22222;