tools: process SVD files in parallel

This speeds up the generation of SVD files, for example as part of a
package build (where parallelism may not be desired, or tools should
auto-detect the number of threads to use).

.github/workflows/build-macos.yml

@@ -88,7 +88,7 @@ jobs:
         if: steps.cache-wasi-libc.outputs.cache-hit != 'true'
         run: make wasi-libc
       - name: make gen-device
-        run: make -j3 gen-device
+        run: make gen-device
       - name: Test TinyGo
         shell: bash
         run: make test GOTESTFLAGS="-short"

.github/workflows/linux.yml

@@ -255,7 +255,7 @@ jobs:
       - name: Build wasi-libc
         if: steps.cache-wasi-libc.outputs.cache-hit != 'true'
         run: make wasi-libc
-      - run: make gen-device -j4
+      - run: make gen-device
       - name: Test TinyGo
         run: make ASSERT=1 test
       - name: Build TinyGo

.github/workflows/sizediff.yml

@@ -49,7 +49,7 @@ jobs:
           path: |
             ~/.cache/go-build
             ~/go/pkg/mod
-      - run: make gen-device -j4
+      - run: make gen-device
       - name: Download drivers repo
         run: git clone https://github.com/tinygo-org/drivers.git
       - name: Save HEAD

.github/workflows/windows.yml

@@ -98,7 +98,7 @@ jobs:
         run: |
           scoop install wasmtime
       - name: make gen-device
-        run: make -j3 gen-device
+        run: make gen-device
       - name: Test TinyGo
         shell: bash
         run: make test GOTESTFLAGS="-short"