powerpc/8xxx: Replace is_fsl_pci_cfg with is_serdes_configured

Now that we have serdes support for all 85xx/86xx/Pxxx chips we can
replace the is_fsl_pci_cfg() code with the is_serdes_configured().

Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
diff --git a/board/freescale/p2020ds/p2020ds.c b/board/freescale/p2020ds/p2020ds.c
index b05ef98..a40be13 100644
--- a/board/freescale/p2020ds/p2020ds.c
+++ b/board/freescale/p2020ds/p2020ds.c
@@ -30,6 +30,7 @@
 #include <asm/fsl_pci.h>
 #include <asm/fsl_ddr_sdram.h>
 #include <asm/io.h>
+#include <asm/fsl_serdes.h>
 #include <miiphy.h>
 #include <libfdt.h>
 #include <fdt_support.h>
@@ -210,7 +211,7 @@
 
 	puts("\n");
 #ifdef CONFIG_PCIE2
-	pcie_configured = is_fsl_pci_cfg(LAW_TRGT_IF_PCIE_2, io_sel);
+	pcie_configured = is_serdes_configured(PCIE2);
 
 	if (pcie_configured && !(devdisr & MPC85xx_DEVDISR_PCIE2)) {
 		SET_STD_PCIE_INFO(pci_info[num], 2);
@@ -250,7 +251,7 @@
 #endif
 
 #ifdef CONFIG_PCIE3
-	pcie_configured = is_fsl_pci_cfg(LAW_TRGT_IF_PCIE_3, io_sel);
+	pcie_configured = is_serdes_configured(PCIE3);
 
 	if (pcie_configured && !(devdisr & MPC85xx_DEVDISR_PCIE3)) {
 		SET_STD_PCIE_INFO(pci_info[num], 3);
@@ -269,7 +270,7 @@
 #endif
 
 #ifdef CONFIG_PCIE1
-	pcie_configured = is_fsl_pci_cfg(LAW_TRGT_IF_PCIE_1, io_sel);
+	pcie_configured = is_serdes_configured(PCIE1);
 
 	if (pcie_configured && !(devdisr & MPC85xx_DEVDISR_PCIE)) {
 		SET_STD_PCIE_INFO(pci_info[num], 1);