pci: fsl: Change compatible string for mpc8548 to "fsl, mpc8548-pcie"

Upstream Linux kernel uses for mpc8548-based PCIe controllers compatible
string "fsl,mpc8548-pcie". So change U-Boot fsl PCIe driver and all DTS
files to use "fsl,mpc8548-pcie" instead of "fsl,pcie-mpc8548" to be
compatible with Linux kernel.

Signed-off-by: Pali Rohár <pali@kernel.org>
Reviewed-by: Priyanka Jain <priyanka.jain@nxp.com>
diff --git a/arch/powerpc/dts/mpc8548-post.dtsi b/arch/powerpc/dts/mpc8548-post.dtsi
index 2206f2d..97c3ce6 100644
--- a/arch/powerpc/dts/mpc8548-post.dtsi
+++ b/arch/powerpc/dts/mpc8548-post.dtsi
@@ -27,7 +27,7 @@
 };
 
 &pcie {
-	compatible = "fsl,pcie-mpc8548", "fsl,pcie-fsl-qoriq";
+	compatible = "fsl,mpc8548-pcie", "fsl,pcie-fsl-qoriq";
 	law_trgt_if = <2>;
 	#address-cells = <3>;
 	#size-cells = <2>;