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/common/cli_simple.c b/common/cli_simple.c
index 358e9b7..7d91316 100644
--- a/common/cli_simple.c
+++ b/common/cli_simple.c
@@ -14,6 +14,7 @@
 #include <command.h>
 #include <console.h>
 #include <env.h>
+#include <log.h>
 #include <linux/ctype.h>
 
 #define DEBUG_PARSER	0	/* set to 1 to debug */