Update Linux to v5.4.2

Change-Id: Idf6911045d9d382da2cfe01b1edff026404ac8fd
diff --git a/include/uapi/Kbuild b/include/uapi/Kbuild
new file mode 100644
index 0000000..61ee6e5
--- /dev/null
+++ b/include/uapi/Kbuild
@@ -0,0 +1,14 @@
+# SPDX-License-Identifier: GPL-2.0
+ifeq ($(wildcard $(srctree)/arch/$(SRCARCH)/include/uapi/asm/a.out.h),)
+no-export-headers += linux/a.out.h
+endif
+
+ifeq ($(wildcard $(srctree)/arch/$(SRCARCH)/include/uapi/asm/kvm.h),)
+no-export-headers += linux/kvm.h
+endif
+
+ifeq ($(wildcard $(srctree)/arch/$(SRCARCH)/include/uapi/asm/kvm_para.h),)
+ifeq ($(wildcard $(objtree)/arch/$(SRCARCH)/include/generated/uapi/asm/kvm_para.h),)
+no-export-headers += linux/kvm_para.h
+endif
+endif