Now that the node_device driver is aware of CCW devices, let's hook up
virsh so that we can filter them properly.
Reviewed-by: NBoris Fiuczynski <fiuczy@linux.vnet.ibm.com>
Reviewed-by: NMarc Hartmayer <mhartmay@linux.vnet.ibm.com>
Signed-off-by: NBjoern Walk <bwalk@linux.vnet.ibm.com>

The reason for introducing two capabilities, one for the device itself
(cap 'mdev') and one for the parent device listing the available types
('mdev_types'), is that we should be able to do
'virsh nodedev-list --cap' not only for existing mdev devices but also
for devices that support creation of mdev devices, since one day libvirt
might be actually able to create the mdev devices in an automated way
(just like we do for NPIV/vHBA).

https://bugzilla.redhat.com/show_bug.cgi?id=1452072Signed-off-by: NErik Skultety <eskultet@redhat.com>

After 7f1bdec5 our nodedev driver is capable of
determining DRM devices (DRM stands for Direct Render Manager not
Digital rights management). There is still one bit missing
though: virConnectListAllNodeDevices() is capable of listing
either all devices or just those with specified capability. Well,
DRM capability is missing there.
Signed-off-by: NMichal Privoznik <mprivozn@redhat.com>

Signed-off-by: NNitesh Konkar <nitkon12@linux.vnet.ibm.com>

Signed-off-by: NNitesh Konkar <nitkon12@linux.vnet.ibm.com>

Node device lifecycle event API entry points for registering and
deregistering node deivce events, as well as types of events
associated with node device.
These entry points will be used for implementing asynchronous
lifecycle events.

Node device API:
virConnectNodeDeviceEventRegisterAny
virConnectNodeDeviceEventDeregisterAny
virNodeDeviceEventLifecycleType which has events CREATED and DELETED

There are also a couple that were very uninformatively just logging
the value of the pointer rather than the string itself:

* the "name" arg to virNodeDeviceLookupByName()
* wwnn and wwpn args to virNodeDeviceLookupSCSIHostByWWN()

All char*'s that make sense should now have their contents logged
rather than the pointer, and all %s args should now be inside
NULLSTR().

Signed-off-by: NMartin Kletzander <mkletzan@redhat.com>

Introduce a src/libvirt-nodedev.c file to hold all the
methods related to the virNodeDevice type.