The SOM-LV and Torpedo boards are very similar, but something
happened growing SPL enough to break the Torpedo.  The SOM-LV
board were not doing alias sequencing during SPL and they
continue to work while something broke the Torpedo.  This
patch disables SPL_DM_SEQ_ALIAS allowing it to boot again.
Signed-off-by: NAdam Ford <aford173@gmail.com>