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/drivers/dma/sandbox-dma-test.c b/drivers/dma/sandbox-dma-test.c
index 2b8259a..a19e5e3 100644
--- a/drivers/dma/sandbox-dma-test.c
+++ b/drivers/dma/sandbox-dma-test.c
@@ -15,6 +15,7 @@
 #include <dma-uclass.h>
 #include <dt-structs.h>
 #include <errno.h>
+#include <linux/printk.h>
 
 #define SANDBOX_DMA_CH_CNT 3
 #define SANDBOX_DMA_BUF_SIZE 1024