[U-Boot] setting of ARCH based on HOSTARCH?

Wolfgang,

I've been building for sometime now on a native PPC box w/o any issue. However in looking at the Kconfig patches it showed in an issue in that I don't ever set ARCH to anything. It seems like there are two solutions to this:

1. ARCH is expected to be set explicitly be the user 2. add something like:

ifndef ARCH ARCH = $(HOSTARCH) endif

into the toplevel Makefile.

Feelings?

- k