build: kill one indirection

No need to first define X86_32 and then replace every
single use of it with its lower cased equivalent.
Just start out with the lower case versions in the first
place.

Change-Id: I1e771ef443db1b8d34018d19a64a9ee489cd8133
Signed-off-by: Patrick Georgi <patrick@georgi-clan.de>
Reviewed-on: http://review.coreboot.org/5767
Tested-by: build bot (Jenkins)
Reviewed-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
3 files changed