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/fpga/fpga.c b/drivers/fpga/fpga.c
index f7e5556..fe3dfa1 100644
--- a/drivers/fpga/fpga.c
+++ b/drivers/fpga/fpga.c
@@ -7,6 +7,7 @@
 /* Generic FPGA support */
 #include <common.h>             /* core U-Boot definitions */
 #include <init.h>
+#include <log.h>
 #include <xilinx.h>             /* xilinx specific definitions */
 #include <altera.h>             /* altera specific definitions */
 #include <lattice.h>