pci: extend MSI interrupt vector number to 32 bits

Also increase MSI message data size to 32 bits according to PCIe spec.

Remove 0xff check for MSI interrupts because it is potentially valid
interrupt vector number. Reject 0xff only for legacy pin interrupts.

- MSI-X supports up to 2048 interrupts per device that do not fit to
`uint8`.

- Non-x86 systems may use separate interrupt vector ranges for
hard-wired interrupts and MSI interrupts so `uint8` is not enough to
represent all of them.

Change-Id: Iaf9ffb197ec23db0f97ffe3ea756d28d7bfc8705
Reviewed-on: https://review.haiku-os.org/c/haiku/+/7433
Reviewed-by: waddlesplash <waddlesplash@gmail.com>
Tested-by: Commit checker robot <no-reply+buildbot@haiku-os.org>

acpi: add device tree attributes from _CLS if available

means B_DEVICE_TYPE, B_DEVICE_SUB_TYPE, B_DEVICE_INTERFACE.
_CLS is rare, it means I don't own devices with this attribute.

from the spec: _CLS:
Class Code – supplies OSPM with the PCI-defined class, subclass and programming interface for a device. Optional.

Change-Id: I4f7b7ed66cbe6b4ff4511cb13df2af218350a5d8
Reviewed-on: https://review.haiku-os.org/c/haiku/+/7210
Tested-by: Commit checker robot <no-reply+buildbot@haiku-os.org>
Reviewed-by: Jérôme Duval <jerome.duval@gmail.com>

bus & drivers: drop PCI_x86

Change-Id: I494deaf24a4793a5e0fe9fa46ecdce32f65e616a
Reviewed-on: https://review.haiku-os.org/c/haiku/+/6226
Reviewed-by: waddlesplash <waddlesplash@gmail.com>
Reviewed-by: Fredrik Holmqvist <fredrik.holmqvist@gmail.com>

pch_i2c: move to its own directory

Prepare for more i2c host controller drivers.

Change-Id: I85a4faf8376ffb501994a2bd89e0903bd89ed8cf
Reviewed-on: https://review.haiku-os.org/c/haiku/+/5856
Tested-by: Commit checker robot <no-reply+buildbot@haiku-os.org>
Reviewed-by: Jérôme Duval <jerome.duval@gmail.com>