Update Linux to v5.4.2

Change-Id: Idf6911045d9d382da2cfe01b1edff026404ac8fd
diff --git a/include/asm-generic/shmparam.h b/include/asm-generic/shmparam.h
new file mode 100644
index 0000000..b8f9035
--- /dev/null
+++ b/include/asm-generic/shmparam.h
@@ -0,0 +1,7 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef __ASM_GENERIC_SHMPARAM_H
+#define __ASM_GENERIC_SHMPARAM_H
+
+#define SHMLBA PAGE_SIZE	 /* attach addr a multiple of this */
+
+#endif /* _ASM_GENERIC_SHMPARAM_H */