target-ppc: Suppress TCG instruction emulation warnings for qtest

Signed-off-by: Andreas Färber <afaerber@suse.de>
mips_fulong2e: Silence BIOS loading warning for qtest

Signed-off-by: Andreas Färber <afaerber@suse.de>
mips_malta: Silence BIOS loading warning for qtest

Signed-off-by: Andreas Färber <afaerber@suse.de>
mips_jazz: Silence BIOS loading warning for qtest

Signed-off-by: Andreas Färber <afaerber@suse.de>
mips_r4k: Silence BIOS loading warning for qtest

Signed-off-by: Andreas Färber <afaerber@suse.de>
mips_mipssim: Silence BIOS loading warning for qtest

Signed-off-by: Andreas Färber <afaerber@suse.de>
arm/boot: Turn arm_load_kernel() into no-op for qtest without -kernel

Signed-off-by: Andreas Färber <afaerber@suse.de>
mainstone: Don't enforce use of -pflash for qtest

Simply skip flash setup for now.

Also drop useless debug output.

Signed-off-by: Andreas Färber <afaerber@suse.de>
gumstix: Don't enforce use of -pflash for qtest (WIP)

Signed-off-by: Andreas Färber <afaerber@suse.de>
z2: Don't enforce use of -pflash for qtest

Signed-off-by: Andreas Färber <afaerber@suse.de>
qtest: Add dummy machine tests

Instantiate at least one machine per target so that they get a bit of
test coverage at all. This has proven helpful during QOM refactorings.

Signed-off-by: Andreas Färber <afaerber@suse.de>