board-8064-storage: fix splash screen hang

What an annoying bug...

To reproduce:
* Turn device off, unplugged
* Plug in, allow offmode charging to do its thing
* Once on the black screen, turn device on
* It'll hang on the splash screen until you pull the battery

Likely this will fix the random occurances of this too. That is yet to
be verified though.

Change-Id: Id3c419d93e7ae73c6b7d34e989483003cfece7f3