modpost: Mark uuid_le type to be suitable only for MEI

The uuid_le type is used only in MEI ABI, do not advertise it for others.
While at it, comment out that UUID types are not to be used in a new code.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>

scripts/mod/file2alias.c

@@ -34,19 +34,23 @@ typedef Elf64_Addr	kernel_ulong_t;
 typedef uint32_t	__u32;
 typedef uint16_t	__u16;
 typedef unsigned char	__u8;
+
+/* UUID types for backward compatibility, don't use in new code */
 typedef struct {
 	__u8 b[16];
 } guid_t;
 
-/* backwards compatibility, don't use in new code */
-typedef struct {
-	__u8 b[16];
-} uuid_le;
 typedef struct {
 	__u8 b[16];
 } uuid_t;
+
 #define	UUID_STRING_LEN		36
 
+/* MEI UUID type, don't use anywhere else */
+typedef struct {
+	__u8 b[16];
+} uuid_le;
+
 /* Big exception to the "don't include kernel headers into userspace, which
  * even potentially has different endianness and word sizes, since
  * we handle those differences explicitly below */