Merge tag 'hppa-btlb-pull-request' of https://github.com/hdeller/qemu-hppa into staging

Block-TLB support and linux-user fixes for hppa target

All 32-bit hppa CPUs allow a fixed number of TLB entries to have a
different page size than the default 4k.
Those are called "Block-TLBs" and are created at startup by the
operating system and managed by the firmware of hppa machines
through the firmware PDC_BLOCK_TLB call.

This patchset adds the necessary glue to SeaBIOS-hppa and
qemu to allow up to 16 BTLB entries in the emulation.

Two patches from Mikulas Patocka fix signal delivery issues
in linux-user on hppa.

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# gpg: Signature made Tue 19 Sep 2023 15:17:39 EDT
# gpg:                using EDDSA key BCE9123E1AD29F07C049BBDEF712B510A23A0F5F
# gpg: Good signature from "Helge Deller <deller@gmx.de>" [unknown]
# gpg:                 aka "Helge Deller <deller@kernel.org>" [unknown]
# gpg: WARNING: This key is not certified with a trusted signature!
# gpg:          There is no indication that the signature belongs to the owner.
# Primary key fingerprint: 4544 8228 2CD9 10DB EF3D  25F8 3E5F 3D04 A7A2 4603
#      Subkey fingerprint: BCE9 123E 1AD2 9F07 C049  BBDE F712 B510 A23A 0F5F

* tag 'hppa-btlb-pull-request' of https://github.com/hdeller/qemu-hppa:
  linux-user/hppa: lock both words of function descriptor
  linux-user/hppa: clear the PSW 'N' bit when delivering signals
  target/hppa: Wire up diag instruction to support BTLB
  target/hppa: Extract diagnose immediate value
  target/hppa: Add BTLB support to hppa TLB functions
  target/hppa: Report and clear BTLBs via fw_cfg at startup
  target/hppa: Allow up to 16 BTLB entries
  target/hppa: Update to SeaBIOS-hppa version 9

Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>