nb/intel/i945: Enable and allocate 8M for TSEG

TSEG can be used as a stage cache and SMM can be relocated here.

Tested on Intel D945GCLF, still boots.

Change-Id: I0da5a00c98c4c4fb309b2691dc1d4645eb35b4fd
Signed-off-by: Arthur Heymans <arthur@aheymans.xyz>
Reviewed-on: https://review.coreboot.org/25592
Reviewed-by: Patrick Rudolph <siro@das-labor.org>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
1 file changed