northbridge/nehalem: clean up header file

* remove duplicate macro definitions
* add brackets to macros

Change-Id: I1f758203afdcb1b18f3c0d786698f9fbf2246e0e
Signed-off-by: Felix Held <felix-coreboot@felixheld.de>
Reviewed-on: https://review.coreboot.org/27713
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Arthur Heymans <arthur@aheymans.xyz>
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
1 file changed