github: workflows: Use upstream tests

Several things are easier now.

Signed-off-by: Jérôme Pouiller <jerome.pouiller@silabs.com>

Author: jerome-pouiller

.github/workflows/upstream-build.yml

@@ -31,40 +31,32 @@ jobs:
           toolchains: arm-zephyr-eabi
 
       - name: Fetch blobs
-        working-directory: zephyr-silabs
         shell: bash
         run: |
           west blobs fetch hal_silabs
 
       - name: Build Entropy test
-        working-directory: zephyr-silabs
         shell: bash
         run: |
           west twister -v --inline-logs -K \
             -s drivers.entropy \
             -p siwx917_rb4338a
 
       - name: Build Flash test
-        working-directory: zephyr-silabs
         shell: bash
         run: |
           west twister -v --inline-logs \
             -s drivers.flash.common.default \
-            -p siwx917_rb4338a \
-            -x DTC_OVERLAY_FILE=$(pwd)/tests/drivers/flash/common/boards/siwx917_rb4338a.overlay
+            -p siwx917_rb4338a
 
       - name: Build DMA test
-        working-directory: zephyr-silabs
         shell: bash
         run: |
           west twister -v --inline-logs \
             -s drivers.dma.chan_blen_transfer \
-            -p siwx917_rb4338a \
-            -x DTC_OVERLAY_FILE=$(pwd)/tests/drivers/dma/chan_blen_transfer/boards/siwx917_rb4338a.overlay \
-            -x EXTRA_CONF_FILE=$(pwd)/tests/drivers/dma/chan_blen_transfer/boards/siwx917_rb4338a.conf
+            -p siwx917_rb4338a
 
       - name: Build Bluetooth samples
-        working-directory: zephyr-silabs
         shell: bash
         run: |
           west twister -v --inline-logs -K \
@@ -73,21 +65,18 @@ jobs:
             -p xg27_dk2602a \
             -p siwx917_rb4338a
 
-      - name: Build Rail samples
-        working-directory: zephyr-silabs
-        shell: bash
-        run: |
-          west twister -v --inline-logs \
-            -s sample.rail.simple_txrx -T samples
-
       - name: Build Wifi samples
-        working-directory: zephyr-silabs
         shell: bash
         run: |
           west twister -v --inline-logs -K \
             -s sample.net.wifi \
             -p siwx917_rb4338a
           west twister -v --inline-logs -K \
-            -s sample.net.wifi \
-            -p siwx917_rb4338a \
-            -x EXTRA_CONF_FILE=$(pwd)/samples/net/wifi/shell/soc/siwx917_offloaded_sockets.conf
+            -s sample.net.wifi.siwx91x_offloaded \
+            -p siwx917_rb4338a
+
+      - name: Build Rail samples
+        shell: bash
+        run: |
+          west twister -v --inline-logs \
+            -s sample.rail.simple_txrx -T zephyr-silabs/samples