Update OpenBIOS PPC image

Update OpenBIOS PPC image to SVN r1063 to fix issues introduced by
commit 9e56edcf. The code change in this revision only affects PPC,
so OpenBIOS SPARC images are not updated.
Signed-off-by: NAurelien Jarno <aurelien@aurel32.net>

pc-bios/README

@@ -12,7 +12,7 @@
   1275-1994 (referred to as Open Firmware) compliant firmware.
   The included images for PowerPC (for 32 and 64 bit PPC CPUs),
   Sparc32 and Sparc64 are built from OpenBIOS SVN revision
-  1062.
+  1063.
 
 - SLOF (Slimline Open Firmware) is a free IEEE 1275 Open Firmware
   implementation for certain IBM POWER hardware.  The sources are at

openbios @ f095c858

-Subproject commit d1d2787f87167edf487a60e61b9168514d5a7434
+Subproject commit f095c858136896d236931357b8d597f407286f71