stout: Kill dead i915 files

Not referenced anywhere.

Change-Id: I6529f2ecbc34a2fa9ca720fea1224670eb98bdcd
Signed-off-by: Vladimir Serbinenko <phcoder@gmail.com>
Reviewed-on: http://review.coreboot.org/6815
Tested-by: build bot (Jenkins)
Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
google/link: Use common i915_reg.h.

Checked by comparing binaries and seeing no differences other than
build info.

Change-Id: Ie702c540a18b50d6da0379f7c4e65adf3e4f18d4
Signed-off-by: Vladimir Serbinenko <phcoder@gmail.com>
Reviewed-on: http://review.coreboot.org/6819
Tested-by: build bot (Jenkins)
Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>