[PATCH] serial: Fix build failure caused by missing header file

[Pranith Kumar]

Fix build failure caused by missing header file:

drivers/tty/serial/nwpserial.c: In function 'wait_for_bits':
drivers/tty/serial/nwpserial.c:53:3: error: implicit declaration of function 'udelay' [-Werror=implicit-function-declaration]

Signed-off-by: Pranith Kumar <bobby.prani@xxxxxxxxx>
---
 drivers/tty/serial/nwpserial.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/tty/serial/nwpserial.c b/drivers/tty/serial/nwpserial.c
index c06366b..5da7622 100644
--- a/drivers/tty/serial/nwpserial.c
+++ b/drivers/tty/serial/nwpserial.c
@@ -22,6 +22,7 @@
 #include <linux/of_platform.h>
 #include <linux/of_device.h>
 #include <linux/nwpserial.h>
+#include <linux/delay.h>
 #include <asm/prom.h>
 #include <asm/dcr.h>
 
-- 
1.9.1

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