load_unaligned() and "uld" instruction

[Jun Sun <jsun@mvista.com>]

The USB sub-system uses "unaligned.h" file to access unaligned data. 
All the unaligned data access functions depend on "uld" and "usw"
instructions, which are not available on many CPUs.

I wonder if there is a version of unaligned access functions which do
not depend on those instructions.  If not, I can probably write one.

Any suggestions?

Jun