ci: set various ccache-cache-key parameters for the setup action

The setup action now supports caching the ccache objects, set a
ccache-cache-key for the jobs that can benefit from it, disable it from
the ones that don't really build anything.

Signed-off-by: Fabio Baltieri <[email protected]>

Author: fabiobaltieri

.github/workflows/hello_world_multiplatform.yaml

@@ -63,6 +63,7 @@ jobs:
         with:
           app-path: zephyr
           toolchains: aarch64-zephyr-elf:arc-zephyr-elf:arc64-zephyr-elf:arm-zephyr-eabi:mips-zephyr-elf:riscv64-zephyr-elf:sparc-zephyr-elf:x86_64-zephyr-elf:xtensa-dc233c_zephyr-elf:xtensa-sample_controller32_zephyr-elf:rx-zephyr-elf
+          ccache-cache-key: hw-${{ matrix.os }}
 
       - name: Build firmware
         working-directory: zephyr

.github/workflows/twister.yaml

@@ -69,6 +69,7 @@ jobs:
         with:
           app-path: zephyr
           toolchains: all
+          enable-ccache: false
 
       - name: Environment Setup
         working-directory: zephyr

.github/workflows/twister_tests_blackbox.yml

@@ -49,6 +49,7 @@ jobs:
       with:
         app-path: zephyr
         toolchains: all
+        enable-ccache: false
 
     - name: Run Pytest For Twister Black Box Tests
       if: ${{ runner.os == 'Linux' }}