common: Drop log.h from common header

Move this header out of the common header.

Signed-off-by: Simon Glass <sjg@chromium.org>
diff --git a/drivers/usb/host/ohci-lpc32xx.c b/drivers/usb/host/ohci-lpc32xx.c
index 8ddced3..afb9e29 100644
--- a/drivers/usb/host/ohci-lpc32xx.c
+++ b/drivers/usb/host/ohci-lpc32xx.c
@@ -11,6 +11,7 @@
 #include <dm.h>
 #include <errno.h>
 #include <init.h>
+#include <log.h>
 #include <wait_bit.h>
 #include <asm/io.h>
 #include <asm/arch/cpu.h>