armv8: fsl-layerscape: Fix typo in Layerscape PCIe config entry

The correct config entry is CONFIG_PCIE_LAYERSCAPE and this
typo results in skipping the fixup of Linux PCIe DT nodes.

Also enable the fixup when Layerscape Gen4 controller driver
is enabled.

Fixes: 4da0e52c9dc0 (armv8: fsl-layerscape: fix config dependency
		     for layerscape pci code)

Signed-off-by: Hou Zhiqiang <Zhiqiang.Hou@nxp.com>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Priyanka Jain <priyanka.jain@nxp.com>
diff --git a/arch/arm/cpu/armv8/fsl-layerscape/fdt.c b/arch/arm/cpu/armv8/fsl-layerscape/fdt.c
index fabe0f0..19917b2 100644
--- a/arch/arm/cpu/armv8/fsl-layerscape/fdt.c
+++ b/arch/arm/cpu/armv8/fsl-layerscape/fdt.c
@@ -435,7 +435,7 @@
 	do_fixup_by_path_u32(blob, "/sysclk", "clock-frequency",
 			     CONFIG_SYS_CLK_FREQ, 1);
 
-#ifdef CONFIG_PCI_LAYERSCAPE
+#if defined(CONFIG_PCIE_LAYERSCAPE) || defined(CONFIG_PCIE_LAYERSCAPE_GEN4)
 	ft_pci_setup(blob, bd);
 #endif