github: Switch to shared workflows

Signed-off-by: Nathan Chancellor <nathan@kernel.org>

Author: nathanchance

.github/workflows/lint.yml

@@ -3,27 +3,6 @@ name: Lint checks
 on: [push, pull_request]
 jobs:
   shellcheck:
-    runs-on: ubuntu-latest
-    steps:
-    - uses: actions/checkout@v2
-    - name: shellcheck
-      uses: bewuethr/shellcheck-action@v2
-  shfmt-check:
-    runs-on: ubuntu-latest
-    steps:
-    - uses: actions/checkout@v2
-    - uses: actions/setup-go@v2
-      with:
-        go-version: '1.14.2'
-    - uses: actions/cache@v2
-      with:
-        path: ~/go/pkg/mod
-        key: ${{ runner.os }}-go
-        restore-keys: |
-          ${{ runner.os }}-go-
-    - name: Run shfmt
-      run: |
-        GO111MODULE=on go get mvdan.cc/sh/v3/cmd/shfmt
-        while read -r f; do
-          PATH=$HOME/go/bin:$PATH shfmt -ci -d -i 4 $f
-        done < <(find . -type f -name "*.sh")
+    uses: ClangBuiltLinux/actions-workflows/.github/workflows/shellcheck.yml@main
+  shfmt:
+    uses: ClangBuiltLinux/actions-workflows/.github/workflows/shfmt.yml@main