sam460ex: Use type cast macro instead of simple cast
Use the PCI_BUS type cast macro to convert result of qdev_get_child_bus().
Also remove the check for NULL afterwards which should not be needed
because sysbus_create_simple() uses error_abort and we create the PCI
host object here that's expected to have a PCI bus so this shouldn't
fail. Even if it would fail that would be due to a programmer error so
an error message is not necessary.
Signed-off-by: BALATON Zoltan <balaton@eik.bme.hu>
Message-Id: <
a4dc55b56eed3ce899b7bf9835b980a114c52598.
1610143658.git.balaton@eik.bme.hu>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>