bd82x6x: Consolidate early native USB init

Change-Id: I6189930fd3c69c3497e4cf1a78035e6614761b13
Signed-off-by: Vladimir Serbinenko <phcoder@gmail.com>
Reviewed-on: http://review.coreboot.org/6923
Tested-by: build bot (Jenkins)
Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
libpayload: Fix missed CONFIG_ -> CONFIG_LP_ substitutions

Change-Id: I1c64a9a649398ebe2eda179907c470f99caa9fc3
Signed-off-by: Nico Huber <nico.h@gmx.de>
Reviewed-on: http://review.coreboot.org/7056
Tested-by: build bot (Jenkins)
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>