common: freescale: Move arch-specific declarations

The declarations should not be in common.h. Move them to the arch-specific
headers.

Signed-off-by: Simon Glass <sjg@chromium.org>
[trini: Fixup thinko defined(FSL_LSCH3) -> defined(CONFIG_FSL_LSCH3)]
Signed-off-by: Tom Rini <trini@konsulko.com>
diff --git a/drivers/pci/pcie_layerscape_fixup.c b/drivers/pci/pcie_layerscape_fixup.c
index ce709bf..9e6c2f5 100644
--- a/drivers/pci/pcie_layerscape_fixup.c
+++ b/drivers/pci/pcie_layerscape_fixup.c
@@ -14,6 +14,9 @@
 #ifdef CONFIG_OF_BOARD_SETUP
 #include <libfdt.h>
 #include <fdt_support.h>
+#ifdef CONFIG_ARM
+#include <asm/arch/clock.h>
+#endif
 #include "pcie_layerscape.h"
 
 #if defined(CONFIG_FSL_LSCH3) || defined(CONFIG_FSL_LSCH2)