parisc: Fix Debug output on 64-bit PDC

Need to F-extend the CPU_HPA to get to I/O port for Debug info.

Signed-off-by: Helge Deller <deller@gmx.de>
diff --git a/src/parisc/parisc.c b/src/parisc/parisc.c
index 0d9168e..8f586a5 100644
--- a/src/parisc/parisc.c
+++ b/src/parisc/parisc.c
@@ -3082,6 +3082,7 @@
     boot_init();
 
     DebugOutputPort = romfile_loadint("/etc/hppa/DebugOutputPort", CPU_HPA + 24);
+    DebugOutputPort = F_EXTEND(DebugOutputPort);
 
     i = romfile_loadint("/etc/firmware-min-version", 0);
     if (i && i > SEABIOS_HPPA_VERSION) {