pseries: Update SLOF firmware image

The only change is that now SLOF can also boot big endian zImage
but kernel-addr=0 is still required.

Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru>
Signed-off-by: Daniel Henrique Barboza <danielhb413@gmail.com>

docs/system/ppc/pseries.rst

@@ -62,7 +62,7 @@ Booting via ``-kernel`` supports the following:
 +-------------------+-------------------+------------------+
 | vmlinux LE        |     ✓             |     ✓            |
 +-------------------+-------------------+------------------+
-| zImage.pseries BE |     x             |     ✓¹           |
+| zImage.pseries BE |     ✓¹            |     ✓¹           |
 +-------------------+-------------------+------------------+
 | zImage.pseries LE |     ✓             |     ✓            |
 +-------------------+-------------------+------------------+

pc-bios/README

@@ -14,7 +14,7 @@
 - SLOF (Slimline Open Firmware) is a free IEEE 1275 Open Firmware
   implementation for certain IBM POWER hardware.  The sources are at
   https://github.com/aik/SLOF, and the image currently in qemu is
-  built from git tag qemu-slof-20220110.
+  built from git tag qemu-slof-20220719.
 
 - VOF (Virtual Open Firmware) is a minimalistic firmware to work with
   -machine pseries,x-vof=on. When enabled, the firmware acts as a slim shim and

roms/SLOF

@@ -1 +1 @@
-Subproject commit 5b4c5acdcd552a4e1796aeca6bb700f6cbb0282d
+Subproject commit 6b6c16b4b40763507cf1f518096f3c3883c5cf2d