northbridge/intel/haswell: Fix copy paste error

DIMMB's DDR width is in bit 20, not bit 19.

Change-Id: I48866d9243c2a576a02519724429801ae47c5644
Signed-off-by: Ryan Salsamendi <rsalsamendi@hotmail.com>
Reviewed-on: https://review.coreboot.org/20445
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Matt DeVillier <matt.devillier@gmail.com>
Reviewed-by: Nico Huber <nico.h@gmx.de>
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
diff --git a/src/northbridge/intel/haswell/raminit.c b/src/northbridge/intel/haswell/raminit.c
index aa07f16..e48cca9 100644
--- a/src/northbridge/intel/haswell/raminit.c
+++ b/src/northbridge/intel/haswell/raminit.c
@@ -104,7 +104,7 @@
 		       ((ch_conf >> 16) & 1) ? "" : ", selected");
 		printk(BIOS_DEBUG, "   DIMMB %d MB width %s %s rank%s\n",
 		       ((ch_conf >> 8) & 0xff) * 256,
-		       ((ch_conf >> 19) & 1) ? "x16" : "x8 or x32",
+		       ((ch_conf >> 20) & 1) ? "x16" : "x8 or x32",
 		       ((ch_conf >> 18) & 1) ? "dual" : "single",
 		       ((ch_conf >> 16) & 1) ? ", selected" : "");
 	}