include/linux/efi.h: redefine type, constant, macro from generic code

Generic UUID library defines structure type, macro to define UUID, and
the length of the UUID string. This patch removes duplicate data
structure definition, UUID string length constant as well as macro for
UUID handling.

Signed-off-by: Andy Shevchenko <[e-mail]>
Reviewed-by: Matt Fleming <[e-mail]>
Cc: Dmitry Kasatkin <[e-mail]>
Cc: Mimi Zohar <[e-mail]>
Cc: Rasmus Villemoes <[e-mail]>
Cc: Arnd Bergmann <[e-mail]>
Cc: "Theodore Ts'o" <[e-mail]>
Cc: Al Viro <[e-mail]>
Cc: Jens Axboe <[e-mail]>
Signed-off-by: Andrew Morton <[e-mail]>
Signed-off-by: Linus Torvalds <[e-mail]>

include/linux/efi.h

···
 #include <linux/pfn.h>
 #include <linux/pstore.h>
 #include <linux/reboot.h>
+#include <linux/uuid.h>
 #include <linux/screen_info.h>
 
 #include <asm/page.h>
···
 typedef u64 efi_physical_addr_t;
 typedef void *efi_handle_t;
 
-
-typedef struct {
-	u8 b[16];
-} efi_guid_t;
+typedef uuid_le efi_guid_t;
 
 #define EFI_GUID(a,b,c,d0,d1,d2,d3,d4,d5,d6,d7) \
-((efi_guid_t) \
-{{ (a) & 0xff, ((a) >> 8) & 0xff, ((a) >> 16) & 0xff, ((a) >> 24) & 0xff, \
-  (b) & 0xff, ((b) >> 8) & 0xff, \
-  (c) & 0xff, ((c) >> 8) & 0xff, \
-  (d0), (d1), (d2), (d3), (d4), (d5), (d6), (d7) }})
+	UUID_LE(a, b, c, d0, d1, d2, d3, d4, d5, d6, d7)
 
 /*
  * Generic EFI table header
···
  * Length of a GUID string (strlen("aaaaaaaa-bbbb-cccc-dddd-eeeeeeeeeeee"))
  * not including trailing NUL
  */
-#define EFI_VARIABLE_GUID_LEN 36
+#define EFI_VARIABLE_GUID_LEN	UUID_STRING_LEN
 
 /*
  * The type of search to perform when calling boottime->locate_handle