kernel: bump 5.15 to 5.15.86

Removed upstreamed:
  pending-5.15/101-Use-stddefs.h-instead-of-compiler.h.patch[1]
  ipq806x/patches-5.15/122-01-clk-qcom-clk-krait-fix-wrong-div2-functions.patch[2]
  bcm27xx/patches-5.15/950-0198-drm-fourcc-Add-packed-10bit-YUV-4-2-0-format.patch[3]

Manually rebased:
  ramips/patches-5.15/100-PCI-mt7621-Add-MediaTek-MT7621-PCIe-host-controller-.patch[4]

Added patch/backported:
  ramips/patches-5.15/107-PCI-mt7621-Add-sentinel-to-quirks-table.patch[5]

All other patches automatically rebased.

1. https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?h=v5.15.86&id=c160505c9b574b346031fdf2c649d19e7939ca11
2. https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?h=v5.15.86&id=a051e10bfc6906d29dae7a31f0773f2702edfe1b
3. https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?h=v5.15.86&id=ec1727f89ecd6f2252c0c75e200058819f7ce47a
4. Quilt gave this output when I applied the patch to rebase it:
% quilt push -f
Applying patch platform/100-PCI-mt7621-Add-MediaTek-MT7621-PCIe-host-controller-.patch
patching file arch/mips/ralink/Kconfig
patching file drivers/pci/controller/Kconfig
patching file drivers/pci/controller/Makefile
patching file drivers/staging/Kconfig
patching file drivers/staging/Makefile
patching file drivers/staging/mt7621-pci/Kconfig
patching file drivers/staging/mt7621-pci/Makefile
patching file drivers/staging/mt7621-pci/TODO
patching file drivers/staging/mt7621-pci/mediatek,mt7621-pci.txt
patching file drivers/staging/mt7621-pci/pci-mt7621.c
Hunk #1 FAILED at 1.
Not deleting file drivers/staging/mt7621-pci/pci-mt7621.c as content differs from patch
1 out of 1 hunk FAILED -- saving rejects to file drivers/staging/mt7621-pci/pci-mt7621.c.rej
patching file drivers/pci/controller/pcie-mt7621.c
Applied patch platform/100-PCI-mt7621-Add-MediaTek-MT7621-PCIe-host-controller-.patch (forced; needs refresh)

Upon inspecting drivers/staging/mt7621-pci/pci-mt7621.c.rej, it seems that
the original patch wants to delete drivers/staging/mt7621-pci/pci-mt7621.c
but upstream's version was not an exact match.  I opted to delete that
file.

5. Suggestion by hauke: https://github.com/torvalds/linux/commit/19098934f910b4d47cb30251dd39ffa57bef9523
"This patch is in upstream kernel, but it was backported to the old
staging driver in kernel 5.15."

Build system: x86_64
Build-tested: bcm2711/RPi4B, filogic/xiaomi_redmi-router-ax6000-ubootmod
Run-tested: bcm2711/RPi4B, filogic/xiaomi_redmi-router-ax6000-ubootmod

Signed-off-by: John Audia <therealgraysky@proton.me>

1 files changed, 38 insertions, 0 deletions

diff --git a/target/linux/ramips/patches-5.15/107-PCI-mt7621-Add-sentinel-to-quirks-table.patch b/target/linux/ramips/patches-5.15/107-PCI-mt7621-Add-sentinel-to-quirks-table.patch
new file mode 100644
index 0000000000..c055f0096d
--- /dev/null
+++ b/target/linux/ramips/patches-5.15/107-PCI-mt7621-Add-sentinel-to-quirks-table.patch
@@ -0,0 +1,38 @@
+From 19098934f910b4d47cb30251dd39ffa57bef9523 Mon Sep 17 00:00:00 2001
+From: John Thomson <git@johnthomson.fastmail.com.au>
+Date: Tue, 6 Dec 2022 06:46:45 +1000
+Subject: [PATCH] PCI: mt7621: Add sentinel to quirks table
+
+Current driver is missing a sentinel in the struct soc_device_attribute
+array, which causes an oops when assessed by the
+soc_device_match(mt7621_pcie_quirks_match) call.
+
+This was only exposed once the CONFIG_SOC_MT7621 mt7621 soc_dev_attr
+was fixed to register the SOC as a device, in:
+
+commit 7c18b64bba3b ("mips: ralink: mt7621: do not use kzalloc too early")
+
+Fix it by adding the required sentinel.
+
+Link: https://lore.kernel.org/lkml/26ebbed1-0fe9-4af9-8466-65f841d0b382@app.fastmail.com
+Link: https://lore.kernel.org/r/20221205204645.301301-1-git@johnthomson.fastmail.com.au
+Fixes: b483b4e4d3f6 ("staging: mt7621-pci: add quirks for 'E2' revision using 'soc_device_attribute'")
+Signed-off-by: John Thomson <git@johnthomson.fastmail.com.au>
+Signed-off-by: Lorenzo Pieralisi <lpieralisi@kernel.org>
+Acked-by: Sergio Paracuellos <sergio.paracuellos@gmail.com>
+---
+ drivers/pci/controller/pcie-mt7621.c | 3 ++-
+ 1 file changed, 2 insertions(+), 1 deletion(-)
+
+--- a/drivers/pci/controller/pcie-mt7621.c
++++ b/drivers/pci/controller/pcie-mt7621.c
+@@ -471,7 +471,8 @@ static int mt7621_pcie_register_host(str
+ }
+ 
+ static const struct soc_device_attribute mt7621_pcie_quirks_match[] = {
+-	{ .soc_id = "mt7621", .revision = "E2" }
++	{ .soc_id = "mt7621", .revision = "E2" },
++	{ /* sentinel */ }
+ };
+ 
+ static int mt7621_pcie_probe(struct platform_device *pdev)