smm: Merge configs SMM_MODULES and SMM_TSEG

SMM_TSEG now implies SMM_MODULES and SMM_MODULES can't be used without SMM_TSEG

Remove some newly dead code while on it.

Change-Id: I2e1818245170b1e0abbd853bedf856cec83b92f2
Signed-off-by: Vladimir Serbinenko <phcoder@gmail.com>
Reviewed-on: http://review.coreboot.org/10355
Tested-by: build bot (Jenkins)
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
13 files changed