common: Drop linux/printk.h from common header

This old patch was marked as deferred. Bring it back to life, to continue
towards the removal of common.h

Move this out of the common header and include it only where needed.

Signed-off-by: Simon Glass <sjg@chromium.org>
diff --git a/board/ti/am65x/evm.c b/board/ti/am65x/evm.c
index d52ac33..8bb13ef 100644
--- a/board/ti/am65x/evm.c
+++ b/board/ti/am65x/evm.c
@@ -20,6 +20,7 @@
 #include <asm/omap_common.h>
 #include <env.h>
 #include <spl.h>
+#include <linux/printk.h>
 
 #include "../common/board_detect.h"
 
diff --git a/board/ti/common/board_detect.c b/board/ti/common/board_detect.c
index 9a53884..ac39b25 100644
--- a/board/ti/common/board_detect.c
+++ b/board/ti/common/board_detect.c
@@ -19,6 +19,7 @@
 #include <mmc.h>
 #include <errno.h>
 #include <malloc.h>
+#include <linux/printk.h>
 
 #include "board_detect.h"
 
diff --git a/board/ti/j721e/evm.c b/board/ti/j721e/evm.c
index 38fe447..d4f7c1d 100644
--- a/board/ti/j721e/evm.c
+++ b/board/ti/j721e/evm.c
@@ -22,6 +22,7 @@
 #include <spl.h>
 #include <dm.h>
 #include <dm/uclass-internal.h>
+#include <linux/printk.h>
 
 #include "../common/board_detect.h"