PCI/MSI: Rename write_msi_msg() to pci_write_msi_msg()

Rename write_msi_msg() to pci_write_msi_msg() to mark it as PCI
specific.

Signed-off-by: Jiang Liu <jiang.liu@linux.intel.com>
Cc: Bjorn Helgaas <bhelgaas@google.com>
Cc: Grant Likely <grant.likely@linaro.org>
Cc: Marc Zyngier <marc.zyngier@arm.com>
Cc: Yingjoe Chen <yingjoe.chen@mediatek.com>
Cc: Yijing Wang <wangyijing@huawei.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
diff --git a/arch/s390/pci/pci.c b/arch/s390/pci/pci.c
index 552b990..ad1a9e2 100644
--- a/arch/s390/pci/pci.c
+++ b/arch/s390/pci/pci.c
@@ -403,7 +403,7 @@
 		msg.data = hwirq;
 		msg.address_lo = zdev->msi_addr & 0xffffffff;
 		msg.address_hi = zdev->msi_addr >> 32;
-		write_msi_msg(irq, &msg);
+		pci_write_msi_msg(irq, &msg);
 		airq_iv_set_data(zdev->aibv, hwirq, irq);
 		hwirq++;
 	}