pci: Remove <common.h> and add needed includes

Remove <common.h> from this driver directory and when needed
add missing include files directly.

Reviewed-by: Heiko Schocher <hs@denx.de>
Signed-off-by: Tom Rini <trini@konsulko.com>
diff --git a/drivers/pci/pcie_layerscape_gen4.c b/drivers/pci/pcie_layerscape_gen4.c
index 021c975..57dc91f 100644
--- a/drivers/pci/pcie_layerscape_gen4.c
+++ b/drivers/pci/pcie_layerscape_gen4.c
@@ -6,7 +6,7 @@
  * Author: Hou Zhiqiang <Minder.Hou@gmail.com>
  */
 
-#include <common.h>
+#include <config.h>
 #include <log.h>
 #include <asm/arch/fsl_serdes.h>
 #include <pci.h>