kernel: bump 5.4 to 5.4.71

All modifications made by update_kernel.sh

Build system: x86_64
Build-tested: ipq806x/R7800, ath79/generic, bcm27xx/bcm2711,
              lantiq/Easybox 904 xDSL
Run-tested:   ipq806x/R7800, lantiq/Easybox 904 xDSL

No dmesg regressions, everything functional

Signed-off-by: John Audia <graysky@archlinux.us>
[add lantiq test reports]
Signed-off-by: Adrian Schmutzler <freifunk@adrianschmutzler.de>

target/linux/uml/patches-5.4/101-mconsole-exec.patch

@@ -153,7 +153,7 @@
  	pid_t pid;
 --- a/kernel/umh.c
 +++ b/kernel/umh.c
-@@ -75,6 +75,28 @@ static int call_usermodehelper_exec_asyn
+@@ -76,6 +76,28 @@ static int call_usermodehelper_exec_asyn
  	flush_signal_handlers(current, 1);
  	spin_unlock_irq(&current->sighand->siglock);
  
@@ -180,9 +180,9 @@
 +	}
 +
  	/*
- 	 * Our parent (unbound workqueue) runs with elevated scheduling
- 	 * priority. Avoid propagating that into the userspace child.
-@@ -353,6 +375,20 @@ static void helper_unlock(void)
+ 	 * Initial kernel threads share ther FS with init, in order to
+ 	 * get the init root directory. But we've now created a new
+@@ -362,6 +384,20 @@ static void helper_unlock(void)
  		wake_up(&running_helpers_waitq);
  }