mtd: rename random32() to prandom_u32()

Use more preferable function name which implies using a pseudo-random
number generator.

Signed-off-by: Akinobu Mita <[email protected]>
Signed-off-by: Artem Bityutskiy <[email protected]>
diff --git a/drivers/mtd/ubi/debug.h b/drivers/mtd/ubi/debug.h
index 33f8f3b..cba89fc 100644
--- a/drivers/mtd/ubi/debug.h
+++ b/drivers/mtd/ubi/debug.h
@@ -86,7 +86,7 @@
 static inline int ubi_dbg_is_bitflip(const struct ubi_device *ubi)
 {
 	if (ubi->dbg.emulate_bitflips)
-		return !(random32() % 200);
+		return !(prandom_u32() % 200);
 	return 0;
 }
 
@@ -100,7 +100,7 @@
 static inline int ubi_dbg_is_write_failure(const struct ubi_device *ubi)
 {
 	if (ubi->dbg.emulate_io_failures)
-		return !(random32() % 500);
+		return !(prandom_u32() % 500);
 	return 0;
 }
 
@@ -114,7 +114,7 @@
 static inline int ubi_dbg_is_erase_failure(const struct ubi_device *ubi)
 {
 	if (ubi->dbg.emulate_io_failures)
-		return !(random32() % 400);
+		return !(prandom_u32() % 400);
 	return 0;
 }