Updating setup script and cleaning comments

Author: BujSet

.ci/scripts/setup-arm-baremetal-tools.sh

@@ -8,7 +8,7 @@
 # Setup arm example environment (including TOSA tools)
 git config --global user.email "[email protected]"
 git config --global user.name "Github Executorch"
-if [ -z "$#"]; then
+if [[ -z "$#" ]]; then
     bash examples/arm/setup.sh --i-agree-to-the-contained-eula
 else
     bash examples/arm/setup.sh --i-agree-to-the-contained-eula "$#"

.github/workflows/trunk.yml

@@ -260,12 +260,11 @@ jobs:
         # User toolchain
         ${toolchain_prefix}c++ --version
 
-        # We will use the the bare metal default, specify to use the 
-        # arm zephyr toolchain if we need to
+        # Setup cmake target to desired toolchain
         toolchain_cmake=examples/arm/ethos-u-setup/${toolchain_prefix}gcc.cmake
         toolchain_cmake=$(realpath ${toolchain_cmake})
 
-        # Build and test size test
+        # Build and run size test
         if [[ ${{ matrix.os}} == "bare_metal" ]]; then 
           bash test/build_size_test.sh "-DCMAKE_TOOLCHAIN_FILE=${toolchain_cmake} -DEXECUTORCH_BUILD_ARM_BAREMETAL=ON"
         elif [[ ${{ matrix.os}} == "zephyr-preset" ]]; then