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/mmc/socfpga_dw_mmc.c b/drivers/mmc/socfpga_dw_mmc.c
index 786cdc7..892222d 100644
--- a/drivers/mmc/socfpga_dw_mmc.c
+++ b/drivers/mmc/socfpga_dw_mmc.c
@@ -4,6 +4,7 @@
  */
 
 #include <common.h>
+#include <log.h>
 #include <asm/arch/clock_manager.h>
 #include <asm/arch/system_manager.h>
 #include <clk.h>