sparc32: Fix struct stat uid/gid types.

Commit 085219f7
("sparc32: use proper types in struct stat")

Accidently changed the struct stat uid/gid members
to uid_t and gid_t, but those get set to
__kernel_uid32_t and __kernel_gid32_t respectively.
Those are of type 'int' but the structure is meant
to have 'short'.  So use uid16_t and gid16_t to
correct this.
Reported-by: Rob Landley <rob@landley.net>
Signed-off-by: David S. Miller <davem@davemloft.net>

arch/sparc/include/asm/stat.h

@@ -53,8 +53,8 @@ struct stat {
 	ino_t		st_ino;
 	mode_t		st_mode;
 	short		st_nlink;
-	uid_t		st_uid;
-	gid_t		st_gid;
+	uid16_t		st_uid;
+	gid16_t		st_gid;
 	unsigned short	st_rdev;
 	off_t		st_size;
 	time_t		st_atime;