Update Linux to v5.10.109

Sourced from [1]

[1] https://cdn.kernel.org/pub/linux/kernel/v5.x/linux-5.10.109.tar.xz

Change-Id: I19bca9fc6762d4e63bcf3e4cba88bbe560d9c76c
Signed-off-by: Olivier Deprez <olivier.deprez@arm.com>
diff --git a/include/linux/errname.h b/include/linux/errname.h
new file mode 100644
index 0000000..e8576ad
--- /dev/null
+++ b/include/linux/errname.h
@@ -0,0 +1,16 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef _LINUX_ERRNAME_H
+#define _LINUX_ERRNAME_H
+
+#include <linux/stddef.h>
+
+#ifdef CONFIG_SYMBOLIC_ERRNAME
+const char *errname(int err);
+#else
+static inline const char *errname(int err)
+{
+	return NULL;
+}
+#endif
+
+#endif /* _LINUX_ERRNAME_H */