CMake: Minor change to error message

Also includes:
* Removal of redundant header files from kdebug.c

CMakeLists.txt

@@ -47,7 +47,7 @@ if(CMAKE_CROSSCOMPILING)
     endif()
 else()
     if (MOS_BUILD_MODE STREQUAL "DEBUG" OR MOS_PORT_E9_ENABLED)
-        message(FATAL_ERROR "Unittests should not be build with DEBUG or PORT_E9_ENABLED.")
+        message(FATAL_ERROR "Unittests should have DEBUG or PORT_E9_ENABLED enabled.")
     endif()
 endif()
 

src/kernel/x86/kdebug.c

@@ -7,13 +7,12 @@
  */
 #include <stdarg.h>
 #include <types.h>
-#include <x86/io.h>
 #include <moslimits.h>
-#include <utils.h>
-#include <disp.h>
-#include <x86/vgatext.h>
 #include <kdebug.h>
 #include <kernel.h>
+#if ARCH == x86
+    #include <x86/io.h>
+#endif
 
 #define ANSI_COL_GRAY   "\x1b[90m"
 #define ANSI_COL_YELLOW "\x1b[93m"