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/mpspec.c b/arch/x86/lib/mpspec.c
index b5ad113..1c49c41 100644
--- a/arch/x86/lib/mpspec.c
+++ b/arch/x86/lib/mpspec.c
@@ -10,6 +10,7 @@
 #include <dm.h>
 #include <errno.h>
 #include <fdtdec.h>
+#include <log.h>
 #include <asm/cpu.h>
 #include <asm/irq.h>
 #include <asm/ioapic.h>