danube: use SOC specific rom stage code

Romstage initialization code does not need to be board specific, keep
it in the SOC directory. Should there be a need for the board specific
code, it can be added later.

TEST=with upcoming patches, the urara board coreboot builds fine

Change-Id: Ib619fa9313d463ded13e9259e50bb5aeaab4fb05
Signed-off-by: Patrick Georgi <pgeorgi@chromium.org>
Original-Commit-Id: 2c08977aaa5e9b5da29359d1920d7d8b61ce86d3
Original-Change-Id: I27e2d225bd36c42ccd29128d0ea9a970566c02af
Original-Signed-off-by: Vadim Bendebury <vbendeb@chromium.org>
Original-Reviewed-on: https://chromium-review.googlesource.com/215992
Original-Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-on: http://review.coreboot.org/8764
Tested-by: build bot (Jenkins)
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
2 files changed