[PATCH] char/random: include <linux/hw_random.h> for add_hwgenerator_randomness

[Ben Dooks (Codethink)]

The add_hwgenerator_randomness() is declared in <linux/hw_random.h>
but this is not being included in drivers/char/random.c so fix
the following sparse warning by including it:

drivers/char/random.c:2489:6: warning: symbol 'add_hwgenerator_randomness' was not declared. Should it be static?

Signed-off-by: Ben Dooks <ben.dooks@xxxxxxxxxxxxxxx>
---
Cc: "Theodore Ts'o" <tytso@xxxxxxx>
Cc: Arnd Bergmann <arnd@xxxxxxxx>
Cc: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
Cc: linux-kernel@xxxxxxxxxxxxxxx
---
 drivers/char/random.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/char/random.c b/drivers/char/random.c
index de434feb873a..da9a58068621 100644
--- a/drivers/char/random.c
+++ b/drivers/char/random.c
@@ -336,6 +336,7 @@
 #include <linux/completion.h>
 #include <linux/uuid.h>
 #include <crypto/chacha.h>
+#include <linux/hw_random.h>
 
 #include <asm/processor.h>
 #include <linux/uaccess.h>
-- 
2.23.0