[POWERPC] FSL: Access PCIe LTSSM register with correct size

The LTSSM register is actual 32-bits wide so we should be doing a
dword access.

Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
diff --git a/arch/powerpc/sysdev/fsl_pci.c b/arch/powerpc/sysdev/fsl_pci.c
index 98290f4..af090c9 100644
--- a/arch/powerpc/sysdev/fsl_pci.c
+++ b/arch/powerpc/sysdev/fsl_pci.c
@@ -160,8 +160,8 @@
 
 int __init fsl_pcie_check_link(struct pci_controller *hose)
 {
-	u16 val;
-	early_read_config_word(hose, 0, 0, PCIE_LTSSM, &val);
+	u32 val;
+	early_read_config_dword(hose, 0, 0, PCIE_LTSSM, &val);
 	if (val < PCIE_LTSSM_L0)
 		return 1;
 	return 0;