kernel: bump 5.15 to 5.15.71

Removed upstreamed:
  uml/patches-5.15/001-um-fix-default-console-kernel-parameter.patch[1]

All other patches automatically rebased

Build system: x86_64
Build-tested: bcm2711/RPi4B, mt7622/RT3200
Run-tested: bcm2711/RPi4B, mt7622/RT3200

1. https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?h=v5.15.71&id=e1dbe8a62098b20f5093cf75ade2f2dc9259b006

Signed-off-by: John Audia <therealgraysky@proton.me>
Compile-tested: mvebu/cortexa72 (RB5009UG+S+IN)
Run-tested: mvebu/cortexa72 (RB5009UG+S+IN)

target/linux/uml/patches-5.15/001-um-fix-default-console-kernel-parameter.patch

@@ -1,54 +0,0 @@
-From 53b5c5f559cc95fc676cb4cc9e5a8d9f0cb8f58c Mon Sep 17 00:00:00 2001
-Message-Id: <53b5c5f559cc95fc676cb4cc9e5a8d9f0cb8f58c.1659815468.git.chunkeey@gmail.com>
-From: Christian Lamparter <chunkeey@gmail.com>
-Date: Sat, 6 Aug 2022 21:22:01 +0200
-Subject: [PATCH v1 1/2] um: fix default console kernel parameter
-To: linux-um@lists.infradead.org
-Cc: Richard Weinberger <richard@nod.at>,
-    Anton Ivanov <anton.ivanov@cambridgegreys.com>,
-    Johannes Berg <johannes@sipsolutions.net>
-
-OpenWrt's UML with 5.15 was producing odd errors/warnings during preinit
-part of the early userspace portion:
-
-|[    0.000000] Kernel command line: ubd0=root.img root=98:0 console=tty
-|[...]
-|[    0.440000] random: jshn: uninitialized urandom read (4 bytes read)
-|[    0.460000] random: jshn: uninitialized urandom read (4 bytes read)
-|/etc/preinit: line 47: can't create /dev/tty: No such device or address
-|/etc/preinit: line 48: can't create /dev/tty: No such device or address
-|/etc/preinit: line 58: can't open /dev/tty: No such device or address
-|[...] repeated many times
-
-That "/dev/tty" came from the command line (which is automatically
-added if no console= parameter was specified for the uml binary).
-
-The TLDP project tells the following about the /dev/tty:
-<https://tldp.org/HOWTO/Text-Terminal-HOWTO-7.html#ss7.3>
-| /dev/tty stands for the controlling terminal (if any) for the current
-| process.[...]
-| /dev/tty is something like a link to the actually terminal device[..]
-
-The "(if any)" is important here, since it's possible for processes to
-not have a controlling terminal.
-
-I think this was a simple typo and the author wanted tty0 there.
-
-CC: Thomas Meyer <thomas@m3y3r.de>
-Fixes: d7ffac33631b ("um: stdio_console: Make preferred console")
-Signed-off-by: Christian Lamparter <chunkeey@gmail.com>
----
- arch/um/kernel/um_arch.c | 2 +-
- 1 file changed, 1 insertion(+), 1 deletion(-)
-
---- a/arch/um/kernel/um_arch.c
-+++ b/arch/um/kernel/um_arch.c
-@@ -31,7 +31,7 @@
- #include <os.h>
- 
- #define DEFAULT_COMMAND_LINE_ROOT "root=98:0"
--#define DEFAULT_COMMAND_LINE_CONSOLE "console=tty"
-+#define DEFAULT_COMMAND_LINE_CONSOLE "console=tty0"
- 
- /* Changed in add_arg and setup_arch, which run before SMP is started */
- static char __initdata command_line[COMMAND_LINE_SIZE] = { 0 };