rapidio/tsi721: use PCI_EXP_DEVCTL2_COMP_TIMEOUT macro

Use the existing PCI_EXP_DEVCTL2_COMP_TIMEOUT macro instead of hard-coding
the PCIe Completion Timeout Value mask. No functional change intended.

Signed-off-by: Bjorn Helgaas <[e-mail]>
Acked-by: Alexandre Bounine <[e-mail]>

drivers/rapidio/devices/tsi721.c

···
 				 "Invalid MRRS override value %d", pcie_mrrs);
 	}
 
-	/* Adjust PCIe completion timeout. */
-	pcie_capability_clear_and_set_word(pdev, PCI_EXP_DEVCTL2, 0xf, 0x2);
+	/* Set PCIe completion timeout to 1-10ms */
+	pcie_capability_clear_and_set_word(pdev, PCI_EXP_DEVCTL2,
+					   PCI_EXP_DEVCTL2_COMP_TIMEOUT, 0x2);
 
 	/*
 	 * FIXUP: correct offsets of MSI-X tables in the MSI-X Capability Block