target/hppa: Update SeaBIOS-hppa to version 23

New SeaBIOS-hppa v23 release with various fixes for qemu-v11: - Various fixes to support CPUs with 40 and 44 bits physical address - Fix PAT_CPU call when asking for current CPU - Add function to stop CPU in PDC_PROC - Prevent execution of some functions when running as PAT firmware - Tune cache parameters to speed up cache flushes in operating systems - Revert resetting LSI SCSI with ODE on HP3000 Signed-off-by: Helge Deller <deller@gmx.de> Reviewed-by: Anton Johansson <anjo@rev.ng>