bcm27xx: 6.1: add kernel patches

Add kernel patches for version 6.1.

Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>

target/linux/bcm27xx/patches-6.1/950-0507-.github-workflows-Add-dtoverlaycheck-workflow.patch

@@ -0,0 +1,62 @@
+From 4aec59014afc64d912502d70194a8823b0a6150a Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.com>
+Date: Tue, 6 Dec 2022 18:11:58 +0000
+Subject: [PATCH] .github/workflows: Add dtoverlaycheck workflow
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+---
+ .github/workflows/dtoverlaycheck.yml | 48 ++++++++++++++++++++++++++++
+ 1 file changed, 48 insertions(+)
+ create mode 100644 .github/workflows/dtoverlaycheck.yml
+
+--- /dev/null
++++ b/.github/workflows/dtoverlaycheck.yml
+@@ -0,0 +1,48 @@
++name: Pi dtoverlay checks
++
++on:
++  pull_request:
++    paths-ignore:
++      - '.github/**'
++    branches: [ "rpi-*" ]
++  push:
++    paths-ignore:
++      - '.github/**'
++    branches: [ "rpi-*" ]
++  workflow_dispatch:
++
++env:
++  UTILS_DIR: "${{github.workspace}}/utils"
++
++jobs:
++  dtoverlaycheck:
++    runs-on: ubuntu-latest
++
++    steps:
++    - name: Install toolchain
++      run: |
++        sudo apt update
++        sudo apt-get install gcc-arm-linux-gnueabihf libfdt-dev device-tree-compiler
++      timeout-minutes: 10
++
++    - uses: actions/checkout@v3
++      with:
++        fetch-depth: 1
++        clean: true
++
++    - name: overlaycheck
++      run: |
++        git clone https://github.com/raspberrypi/utils ${{env.UTILS_DIR}}
++        cd ${{env.UTILS_DIR}}
++        pwd
++        mkdir build
++        cd build
++        pwd
++        cmake ..
++        make -j4
++        sudo make install
++        cd ${{github.workspace}}
++        pwd
++        make ARCH=arm KERNEL=kernel CROSS_COMPILE=arm-linux-gnueabihf- bcm2711_defconfig
++        make ARCH=arm KERNEL=kernel CROSS_COMPILE=arm-linux-gnueabihf- dtbs
++        ${{env.UTILS_DIR}}/overlaycheck/overlaycheck