ADSP: Use $CMAKE_EXECUTABLE_SUFFIX in COMPILER_NAME

The binaries are obviously not .exe-suffixed on Linux

Modules/Platform/ADSP-Common.cmake

@@ -9,9 +9,9 @@ macro(__platform_adsp_init)
     set(CMAKE_ADSP_PROCESSOR "ADSP-${CMAKE_SYSTEM_PROCESSOR}")
     string(TOUPPER "${CMAKE_ADSP_PROCESSOR}" CMAKE_ADSP_PROCESSOR)
 
-    set(CMAKE_ADSP_COMPILER_NAME cc21k.exe)
+    set(CMAKE_ADSP_COMPILER_NAME "cc21k${CMAKE_EXECUTABLE_SUFFIX}")
     if(CMAKE_ADSP_PROCESSOR MATCHES "^ADSP-BF")
-      set(CMAKE_ADSP_COMPILER_NAME ccblkfn.exe)
+      set(CMAKE_ADSP_COMPILER_NAME "ccblkfn${CMAKE_EXECUTABLE_SUFFIX}")
     endif()
 
     set(CMAKE_ADSP_PLATFORM_INITIALIZED TRUE)