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/clk/clk-hsdk-cgu.c b/drivers/clk/clk-hsdk-cgu.c
index 2de3a6a..b740720 100644
--- a/drivers/clk/clk-hsdk-cgu.c
+++ b/drivers/clk/clk-hsdk-cgu.c
@@ -13,6 +13,7 @@
 #include <clk-uclass.h>
 #include <div64.h>
 #include <dm.h>
+#include <log.h>
 #include <linux/io.h>
 #include <asm/arcregs.h>