Update Sparc32 OpenBIOS image to SVN revision 171. Changes:

r170: Fix exception handling and printout
r171: Fix 8 byte alignment problems


git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@3403 c046a42c-6fe2-441c-8c8c-71466251a162

pc-bios/README

@@ -14,7 +14,8 @@
 - OpenBIOS (http://www.openbios.org/) is a free (GPL v2) portable
   firmware implementation. The goal is to implement a 100% IEEE
   1275-1994 (referred to as Open Firmware) compliant firmware.
-  The included Sparc32 and Sparc64 images are built from SVN revision 169.
+  The included Sparc32 image is built from SVN revision 171 and
+  Sparc64 image from revision 169.
 
 - The PXE roms come from Rom-o-Matic etherboot 5.4.2.
   pcnet32:pcnet32 -- [0x1022,0x2000]