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/net/dns_resolver/Kconfig b/net/dns_resolver/Kconfig
index 0a1c223..255df9b 100644
--- a/net/dns_resolver/Kconfig
+++ b/net/dns_resolver/Kconfig
@@ -19,7 +19,7 @@
 	  SMB2 later.  DNS Resolver is supported by the userspace upcall
 	  helper "/sbin/dns.resolver" via /etc/request-key.conf.
 
-	  See <file:Documentation/networking/dns_resolver.txt> for further
+	  See <file:Documentation/networking/dns_resolver.rst> for further
 	  information.
 
 	  To compile this as a module, choose M here: the module will be called
diff --git a/net/dns_resolver/dns_key.c b/net/dns_resolver/dns_key.c
index ad53eb3..3aced95 100644
--- a/net/dns_resolver/dns_key.c
+++ b/net/dns_resolver/dns_key.c
@@ -1,6 +1,6 @@
 /* Key type used to cache DNS lookups made by the kernel
  *
- * See Documentation/networking/dns_resolver.txt
+ * See Documentation/networking/dns_resolver.rst
  *
  *   Copyright (c) 2007 Igor Mammedov
  *   Author(s): Igor Mammedov (niallain@gmail.com)
diff --git a/net/dns_resolver/dns_query.c b/net/dns_resolver/dns_query.c
index cab4e0d..82b084c 100644
--- a/net/dns_resolver/dns_query.c
+++ b/net/dns_resolver/dns_query.c
@@ -1,7 +1,7 @@
 /* Upcall routine, designed to work as a key type and working through
  * /sbin/request-key to contact userspace when handling DNS queries.
  *
- * See Documentation/networking/dns_resolver.txt
+ * See Documentation/networking/dns_resolver.rst
  *
  *   Copyright (c) 2007 Igor Mammedov
  *   Author(s): Igor Mammedov (niallain@gmail.com)