device core: Introduce per-device MSI domain pointer
device core: Introduce per-device MSI domain pointer

As MSI-type features are creeping into non-PCI devices, it is
starting to make sense to give our struct device some form of
support for this, by allowing a pointer to an MSI irq domain to
be set/retrieved.

Reviewed-by: Hanjun Guo <95c4dbadfa6003adc188d9bdfe4b6c123adc8dc4@linaro.org>
Signed-off-by: Marc Zyngier <a16cc0c82647c52d401177f8e50567df5499e36c@arm.com>
Cc: <f99ef57ccac738b558d0fc2e44478b3c5def9522@lists.infradead.org>
Cc: Yijing Wang <ac442ed3e729ed4f09d087e9c319e1c47c72d6f1@huawei.com>
Cc: Ma Jun <4882f4b9534911faad72ab67db01c506fb2724b6@huawei.com>
Cc: Lorenzo Pieralisi <b07d7e22a002c36e256b78f51f1f0db608e62a13@arm.com>
Cc: Duc Dang <02e69028202e3ab4ba908f4d29572c8c5e579377@apm.com>
Cc: Bjorn Helgaas <f10ec01be0c6b54271af5c550cd257810bdf3268@google.com>
Cc: Jiang Liu <68ee766e574f18b34b683085865827393efe88bd@linux.intel.com>
Cc: Jason Cooper <68c46a606457643eab92053c1c05574abb26f861@lakedaemon.net>
Link: http://lkml.kernel.org/r/1438091186-10244-4-git-send-email-a16cc0c82647c52d401177f8e50567df5499e36c@arm.com
Signed-off-by: Thomas Gleixner <00e4cf8f46a57000a44449bf9dd8cbbcc209fd2a@linutronix.de>

KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs