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/x86/lib/pirq_routing.c b/arch/x86/lib/pirq_routing.c
index 17bd2fc..eb6a7d9 100644
--- a/arch/x86/lib/pirq_routing.c
+++ b/arch/x86/lib/pirq_routing.c
@@ -6,6 +6,7 @@
  */
 
 #include <common.h>
+#include <log.h>
 #include <pci.h>
 #include <asm/pci.h>
 #include <asm/pirq_routing.h>