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/arch/microblaze/lib/bootm.c b/arch/microblaze/lib/bootm.c
index 93f95b1..d2ea145 100644
--- a/arch/microblaze/lib/bootm.c
+++ b/arch/microblaze/lib/bootm.c
@@ -16,6 +16,7 @@
 #include <hang.h>
 #include <image.h>
 #include <lmb.h>
+#include <log.h>
 #include <asm/cache.h>
 #include <u-boot/zlib.h>
 #include <asm/byteorder.h>