intel/i945: Fix "always false" statement

Also replace magic number with already existing #define

Change-Id: I64d22aca185bf43ff0ac126584b41920182a1112
Found-by: Coverity Scan
Signed-off-by: Patrick Georgi <patrick@georgi-clan.de>
Reviewed-on: http://review.coreboot.org/6990
Tested-by: build bot (Jenkins)
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Reviewed-by: Idwer Vollering <vidwer@gmail.com>
intel/i945: Another magic number

Replace it with the existing #define

Change-Id: I6e67ed1a455cd4f9eeed1865b9ef981e7ef0a874
Found-by: Idwer Vollering
Signed-off-by: Patrick Georgi <patrick@georgi-clan.de>
Reviewed-on: http://review.coreboot.org/6992
Tested-by: build bot (Jenkins)
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Reviewed-by: Idwer Vollering <vidwer@gmail.com>