[PATCH] mtd: rawnand: au1550: Ensure the presence of the right includes

[Miquel Raynal]

While working a bit on this driver I dropped the platform includes and
commented a few lines just to verify the correctness of my changes. It
appeared the following:

drivers/mtd/nand/raw/au1550nd.c: In function ‘au1550nd_waitrdy’:
drivers/mtd/nand/raw/au1550nd.c:130:3: error: implicit declaration of function ‘usleep_range’ [-Werror=implicit-function-declaration]
   usleep_range(10, 100);
   ^~~~~~~~~~~~
drivers/mtd/nand/raw/au1550nd.c: In function ‘au1550nd_exec_instr’:
drivers/mtd/nand/raw/au1550nd.c:188:3: error: implicit declaration of function ‘ndelay’ [-Werror=implicit-function-declaration]
   ndelay(instr->delay_ns);
   ^~~~~~

I think the delay.h header should be included in this file and not
come from one of its platform includes, so let's add it here.

Signed-off-by: Miquel Raynal <miquel.raynal at bootlin.com>
---
 drivers/mtd/nand/raw/au1550nd.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/mtd/nand/raw/au1550nd.c b/drivers/mtd/nand/raw/au1550nd.c
index 7892022bd6dd..188132c3b7a0 100644
--- a/drivers/mtd/nand/raw/au1550nd.c
+++ b/drivers/mtd/nand/raw/au1550nd.c
@@ -3,6 +3,7 @@
  *  Copyright (C) 2004 Embedded Edge, LLC
  */
 
+#include <linux/delay.h>
 #include <linux/slab.h>
 #include <linux/module.h>
 #include <linux/interrupt.h>
-- 
2.20.1