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/power/pmic/i2c_pmic_emul.c b/drivers/power/pmic/i2c_pmic_emul.c
index 86d7b89..404fe00 100644
--- a/drivers/power/pmic/i2c_pmic_emul.c
+++ b/drivers/power/pmic/i2c_pmic_emul.c
@@ -8,6 +8,7 @@
 #include <errno.h>
 #include <dm.h>
 #include <i2c.h>
+#include <log.h>
 #include <malloc.h>
 #include <power/pmic.h>
 #include <power/sandbox_pmic.h>