[PATCH 1/2] mailbox: mailbox-test: Explicitly include header for spinlock support

[Lee Jones]

Presently the support appears to be implied.

Signed-off-by: Lee Jones <lee@xxxxxxxxxx>
---
 drivers/mailbox/mailbox-test.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/mailbox/mailbox-test.c b/drivers/mailbox/mailbox-test.c
index 4555d678fadda..51e62817f2438 100644
--- a/drivers/mailbox/mailbox-test.c
+++ b/drivers/mailbox/mailbox-test.c
@@ -16,6 +16,7 @@
 #include <linux/platform_device.h>
 #include <linux/poll.h>
 #include <linux/slab.h>
+#include <linux/spinlock.h>
 #include <linux/uaccess.h>
 #include <linux/sched/signal.h>
 
-- 
2.40.0.396.gfff15efe05-goog