PCI: j721e: Use T_PERST_CLK_US macro

Use the T_PERST_CLK_US macro, and the fsleep() function instead of
usleep_range().

Link: https://lore.kernel.org/linux-pci/20240102-j7200-pcie-s2r-v7-6-a2f9156da6c3@bootlin.comSigned-off-by: Thomas Richard <thomas.richard@bootlin.com>
Signed-off-by: Krzysztof Wilczyński <kwilczynski@kernel.org>

drivers/pci/controller/cadence/pci-j721e.c

@@ -576,7 +576,7 @@ static int j721e_pcie_probe(struct platform_device *pdev)
 		 * after 100 us.
 		 */
 		if (gpiod) {
-			usleep_range(100, 200);
+			fsleep(PCIE_T_PERST_CLK_US);
 			gpiod_set_value_cansleep(gpiod, 1);
 		}