Merge tag 'pull-avr-20250422' of https://gitlab.com/rth7680/qemu into staging

target/avr: Fix buffer read in avr_print_insn
target/avr: Improve decode of LDS, STS
target/avr: Move cpu register accesses into system memory
target/avr: Increase TARGET_PAGE_BITS to 10

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* tag 'pull-avr-20250422' of https://gitlab.com/rth7680/qemu:
  target/avr: Increase TARGET_PAGE_BITS to 10
  hw/avr: Prepare for TARGET_PAGE_SIZE > 256
  target/avr: Use do_stb in avr_cpu_do_interrupt
  target/avr: Use cpu_stb_mmuidx_ra in helper_fullwr
  target/avr: Remove NUMBER_OF_IO_REGISTERS
  target/avr: Move cpu register accesses into system memory
  target/avr: Add defines for i/o port registers
  target/avr: Remove OFFSET_CPU_REGISTERS
  target/avr: Improve decode of LDS, STS

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