Merge tag 'misc-20230831' of https://github.com/philmd/qemu into staging

Misc patches queue

Build fixes:
- Only define OS_OBJECT_USE_OBJC with gcc

Overall cleanups:
- Do not declare function prototypes using 'extern' keyword
- Remove unmaintained HAX accelerator
- Have FEWatchFunc handlers return G_SOURCE_CONTINUE/REMOVE instead of boolean
- Avoid modifying QOM class internals from instance in pmbus_device
- Avoid variable-length array in xhci_get_port_bandwidth
- Remove unuseful kvmclock_create() stub
- Style: permit inline loop variables
- Various header cleanups
- Various spelling fixes

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* tag 'misc-20230831' of https://github.com/philmd/qemu: (39 commits)
  build: Only define OS_OBJECT_USE_OBJC with gcc
  tests/tcg/aarch64: Rename bti-crt.inc.c -> bti-crt.c.inc
  ui: spelling fixes
  util: spelling fixes
  util/fifo8: Fix typo in fifo8_push_all() description
  hw/i386: Rename 'hw/kvm/clock.h' -> 'hw/i386/kvm/clock.h'
  hw/i386: Remove unuseful kvmclock_create() stub
  hw/usb/hcd-xhci: Avoid variable-length array in xhci_get_port_bandwidth()
  hw/usb: spelling fixes
  hw/sd: spelling fixes
  hw/mips: spelling fixes
  hw/display: spelling fixes
  hw/ide: spelling fixes
  hw/i2c: spelling fixes
  hw/i2c/pmbus_device: Fix modifying QOM class internals from instance
  hw/char/pl011: Replace magic values by register field definitions
  hw/char/pl011: Remove duplicated PL011_INT_[RT]X definitions
  hw/char/pl011: Display register name in trace events
  hw/char/pl011: Restrict MemoryRegionOps implementation access sizes
  hw/char: Have FEWatchFunc handlers return G_SOURCE_CONTINUE/REMOVE
  ...

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