Add kpm input to build workflow

.github/workflows/build.yml

@@ -54,6 +54,9 @@ on:
       lto:
         required: true
         type: string
+      kpm:
+        required: true
+        type: string
 
 jobs:
   build-samsung-gki:
@@ -317,6 +320,7 @@ jobs:
         uses: ./.github/actions/ak3zip-prep
 
       - name: apply kpm
+        if: inputs.kpm == 'true'
         uses: ./.github/actions/kpm
 
       - name: Upload AnyKernel3 Artifacts