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/sata_sil.c b/drivers/ata/sata_sil.c
index 71ee0c0..17db640 100644
--- a/drivers/ata/sata_sil.c
+++ b/drivers/ata/sata_sil.c
@@ -7,6 +7,7 @@
 
 #include <common.h>
 #include <cpu_func.h>
+#include <log.h>
 #include <pci.h>
 #include <command.h>
 #include <asm/byteorder.h>