Update Linux to v5.4.2

Change-Id: Idf6911045d9d382da2cfe01b1edff026404ac8fd
diff --git a/include/linux/omap-mailbox.h b/include/linux/omap-mailbox.h
index 6dbcd2d..8aa984e 100644
--- a/include/linux/omap-mailbox.h
+++ b/include/linux/omap-mailbox.h
@@ -6,7 +6,9 @@
 #ifndef OMAP_MAILBOX_H
 #define OMAP_MAILBOX_H
 
-typedef u32 mbox_msg_t;
+typedef uintptr_t mbox_msg_t;
+
+#define omap_mbox_message(data) (u32)(mbox_msg_t)(data)
 
 typedef int __bitwise omap_mbox_irq_t;
 #define IRQ_TX ((__force omap_mbox_irq_t) 1)