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_stm32h7.c b/drivers/clk/clk_stm32h7.c
index 18d06b3..f147392 100644
--- a/drivers/clk/clk_stm32h7.c
+++ b/drivers/clk/clk_stm32h7.c
@@ -7,6 +7,7 @@
 #include <common.h>
 #include <clk-uclass.h>
 #include <dm.h>
+#include <log.h>
 #include <regmap.h>
 #include <syscon.h>
 #include <asm/io.h>