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/net/bcm-sf2-eth-gmac.c b/drivers/net/bcm-sf2-eth-gmac.c
index 3794e40..eaadb26 100644
--- a/drivers/net/bcm-sf2-eth-gmac.c
+++ b/drivers/net/bcm-sf2-eth-gmac.c
@@ -12,6 +12,7 @@
 #include <config.h>
 #include <common.h>
 #include <cpu_func.h>
+#include <log.h>
 #include <malloc.h>
 #include <net.h>
 #include <asm/cache.h>