mtd: tests: Include <linux/prandom.h> instead of <linux/random.h>

Substitute the inclusion of <linux/random.h> header with
<linux/prandom.h> to allow the removal of legacy inclusion
of <linux/prandom.h> from <linux/random.h>.

Signed-off-by: Uros Bizjak <ubizjak@gmail.com>
Acked-by: Miquel Raynal <miquel.raynal@bootlin.com>
Cc: Richard Weinberger <richard@nod.at>
Cc: Vignesh Raghavendra <vigneshr@ti.com>
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>

Author: ubizjak

drivers/mtd/tests/oobtest.c

@@ -17,7 +17,7 @@
 #include <linux/mtd/mtd.h>
 #include <linux/slab.h>
 #include <linux/sched.h>
-#include <linux/random.h>
+#include <linux/prandom.h>
 
 #include "mtd_test.h"
 

drivers/mtd/tests/pagetest.c

@@ -17,7 +17,7 @@
 #include <linux/mtd/mtd.h>
 #include <linux/slab.h>
 #include <linux/sched.h>
-#include <linux/random.h>
+#include <linux/prandom.h>
 
 #include "mtd_test.h"
 

drivers/mtd/tests/subpagetest.c

@@ -15,7 +15,7 @@
 #include <linux/mtd/mtd.h>
 #include <linux/slab.h>
 #include <linux/sched.h>
-#include <linux/random.h>
+#include <linux/prandom.h>
 
 #include "mtd_test.h"