parisc: SEABIOS_HPPA_VERSION 5

New features and fixes:

* Fixed SeaBIOS PS/2 keyboard support.

  This now allows to use the qemu "-boot menu=on" option to start the
  firmware boot selection menu and provide a working menu with keyboard on
  serial (qemu "-nographic" option) and PS/2 keyboard (qemu "-graphic"
  option) on graphical screen.
diff --git a/src/parisc/parisc.c b/src/parisc/parisc.c
index 55e8e49..b679954 100644
--- a/src/parisc/parisc.c
+++ b/src/parisc/parisc.c
@@ -31,7 +31,7 @@
 
 #include "vgabios.h"
 
-#define SEABIOS_HPPA_VERSION 4
+#define SEABIOS_HPPA_VERSION 5
 
 /*
  * Various variables which are needed by x86 code.