fix(enable all mitigations): support multiple CPUs

src/playbook/Executables/AtlasDesktop/7. Security/Mitigations/Enable All Mitigations.cmd

@@ -20,7 +20,7 @@ whoami /user | find /i "S-1-5-18" > nul 2>&1 || (
 :main
 :: Enable Spectre and Meltdown
 reg add "HKLM\SYSTEM\CurrentControlSet\Control\Session Manager\Memory Management" /v "FeatureSettingsOverrideMask" /t REG_DWORD /d "3" /f > nul
-powershell -NonI -NoP -C "$proc = (Get-CimInstance Win32_Processor).Name; $env:CPU = if ($proc | sls 'Intel' -Quiet) {'0'} elseif ($proc | sls 'AMD' -Quiet) {'64'}"
+powershell -NonI -NoP -C "$proc = (Get-CimInstance Win32_Processor | Select-Object -First 1).Name; $env:CPU = if ($proc | sls 'Intel' -Quiet) {'0'} elseif ($proc | sls 'AMD' -Quiet) {'64'}"
 if "%CPU%" neq "" (
     reg add "HKLM\SYSTEM\CurrentControlSet\Control\Session Manager\Memory Management" /v "FeatureSettingsOverride" /t REG_DWORD /d "%CPU%" /f > nul
 ) 
@@ -57,4 +57,4 @@ reg add "HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Virtualization" /v "M
 
 echo Finished, please reboot your device for changes to apply.
 pause
-exit /b
+exit /b