[Qemu-ppc] ide-test fails on PPC64 big-endian host

[Peter Maydell]

Hi. I was looking at adding ppc64be to the set of machines I do build
tests on before merging patches, but right now "make check" fails on
this host.

ERROR:/home/pm215/qemu/tests/ide-test.c:721:cdrom_pio_impl: assertion
failed ((data) & (DRQ | DRDY) == (DRQ | DRDY)): (0x00000040 ==
0x00000048)
GTester: last random seed: R02S58b8c55d2bcc2ad0ddd605d5ce8483ee
**
ERROR:/home/pm215/qemu/tests/ide-test.c:721:cdrom_pio_impl: assertion
failed ((data) & (DRQ | DRDY) == (DRQ | DRDY)): (0x00000040 ==
0x00000048)
GTester: last random seed: R02S3bf67d6406a1f4ea5d8ca81bff345065
**
ERROR:/home/pm215/qemu/tests/ide-test.c:788:test_cdrom_dma: assertion
failed (memcmp(pattern, rx, len) == 0): (1 == 0)
GTester: last random seed: R02S2732ddb1755a1620a021eb6c59bd6281

The obvious guess is that something in the IDE code or its test
harness has an accidental little-endian dependency. Would anybody
care to investigate? :-)

thanks
-- PMM