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/spi/stm32_qspi.c b/drivers/spi/stm32_qspi.c
index 6857a87..ae62aeb 100644
--- a/drivers/spi/stm32_qspi.c
+++ b/drivers/spi/stm32_qspi.c
@@ -9,6 +9,7 @@
 
 #include <common.h>
 #include <clk.h>
+#include <log.h>
 #include <reset.h>
 #include <spi-mem.h>
 #include <dm/device_compat.h>