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/ata/ahci_mvebu.c b/drivers/ata/ahci_mvebu.c
index 48a9d00..8be1826 100644
--- a/drivers/ata/ahci_mvebu.c
+++ b/drivers/ata/ahci_mvebu.c
@@ -6,6 +6,7 @@
 #include <common.h>
 #include <ahci.h>
 #include <dm.h>
+#include <log.h>
 
 /*
  * Dummy implementation that can be overwritten by a board