PCI: cadence-ep: Remove obsolete path from comment

This comment still refers to the old driver pathname,
when all PCI drivers were located directly under the
drivers/pci directory.

Anyway the function name itself is enough, so we can
remove the overabundant path reference.

Link: https://lore.kernel.org/r/20200623074851.7832-1-f.suligoi@asem.itSigned-off-by: Flavio Suligoi <f.suligoi@asem.it>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>

drivers/pci/controller/cadence/pcie-cadence-ep.c

@@ -328,7 +328,6 @@ static int cdns_pcie_ep_send_legacy_irq(struct cdns_pcie_ep *ep, u8 fn, u8 intx)
 	cdns_pcie_ep_assert_intx(ep, fn, intx, true);
 	/*
 	 * The mdelay() value was taken from dra7xx_pcie_raise_legacy_irq()
-	 * from drivers/pci/dwc/pci-dra7xx.c
 	 */
 	mdelay(1);
 	cdns_pcie_ep_assert_intx(ep, fn, intx, false);