[SeaBIOS] Current tip not booting from USB or SD cards

[Stefan Berger]

Hello!

The current git tip does not boot from USB or SD cards on an Acer 
C720. The issue seems to stem from:

ab9d771ce14d5b8d38cde373d15a51b45efb99c6 is the first bad commit
commit ab9d771ce14d5b8d38cde373d15a51b45efb99c6
Author: Kevin O'Connor 
Date:   Sat Jun 14 12:48:35 2014 -0400

ehci: Update usb command timeouts to use usb_xfer_time()

Signed-off-by: Kevin O'Connor

:040000 040000 4fcdb230f8fcffc0d8256225eb3c3220bd2293d4 
78b62cb78cc3537da5a2ce1f1417fb1e0a571ba1 M    src

Regards,
     Stefan