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/splice.h b/include/linux/splice.h
index 74b4911..a55179f 100644
--- a/include/linux/splice.h
+++ b/include/linux/splice.h
@@ -78,6 +78,12 @@
 			      struct pipe_buffer *);
 extern ssize_t splice_direct_to_actor(struct file *, struct splice_desc *,
 				      splice_direct_actor *);
+extern long do_splice(struct file *in, loff_t *off_in,
+		      struct file *out, loff_t *off_out,
+		      size_t len, unsigned int flags);
+
+extern long do_tee(struct file *in, struct file *out, size_t len,
+		   unsigned int flags);
 
 /*
  * for dynamic pipe sizing