Update broken web addresses in arch directory.

The patch below updates broken web addresses in the arch directory.

Signed-off-by: Justin P. Mattock <justinmattock@gmail.com>
Signed-off-by: Maciej W. Rozycki <macro@linux-mips.org>
Cc: Finn Thain <fthain@telegraphics.com.au>
Cc: Randy Dunlap <rdunlap@xenotime.net>
Reviewed-by: Finn Thain <fthain@telegraphics.com.au>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>

arch/arm/nwfpe/softfloat.c

@@ -11,8 +11,8 @@ National Science Foundation under grant MIP-9311980.  The original version
 of this code was written as part of a project to build a fixed-point vector
 processor in collaboration with the University of California at Berkeley,
 overseen by Profs. Nelson Morgan and John Wawrzynek.  More information
-is available through the web page `http://HTTP.CS.Berkeley.EDU/~jhauser/
-arithmetic/softfloat.html'.
+is available through the web page
+http://www.jhauser.us/arithmetic/SoftFloat-2b/SoftFloat-source.txt
 
 THIS SOFTWARE IS DISTRIBUTED AS IS, FOR FREE.  Although reasonable effort
 has been made to avoid it, THIS SOFTWARE MAY CONTAIN FAULTS THAT WILL AT