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/phy/keystone-usb-phy.c b/drivers/phy/keystone-usb-phy.c
index 12f8a26..6799e23 100644
--- a/drivers/phy/keystone-usb-phy.c
+++ b/drivers/phy/keystone-usb-phy.c
@@ -13,6 +13,7 @@
 #include <asm/arch/psc_defs.h>
 #include <linux/bitops.h>
 #include <linux/delay.h>
+#include <linux/printk.h>
 
 /* USB PHY control register offsets */
 #define USB_PHY_CTL_UTMI		0x0000