i945: Fix TSEG size allocation for get_top_of_ram()

Seems boards with i945 had TSEG disabled so this had gone unnoticed.

Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Change-Id: I6a00ea9121847ce2fede22538e1b53a870d761f1
Reviewed-on: http://review.coreboot.org/5892
Tested-by: build bot (Jenkins)
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Reviewed-by: Vladimir Serbinenko <phcoder@gmail.com>
1 file changed