Fix names of the suspend and resume macros so that build succeeds

when CONFIG_PM=n:

drivers/spi/dw_spi_pci.c:150: error: 'spi_suspend' undeclared here (not in a function)
drivers/spi/dw_spi_pci.c:151: error: 'spi_resume' undeclared here (not in a function)
Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Acked-by: Feng Tang <feng.tang@intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>

drivers/spi/dw_spi_pci.c

@@ -132,8 +132,8 @@ static int spi_resume(struct pci_dev *pdev)
 	return dw_spi_resume_host(&dwpci->dws);
 }
 #else
-#define mrst_spi_suspend	NULL
-#define mrst_spi_resume		NULL
+#define spi_suspend	NULL
+#define spi_resume	NULL
 #endif
 
 static const struct pci_device_id pci_ids[] __devinitdata = {