kstrtox: fix compile warnings in test

Fix the following warnings:

    CC [M]  lib/test-kstrtox.o
  lib/test-kstrtox.c: In function 'test_kstrtou64_ok':
  lib/test-kstrtox.c:318: warning: this decimal constant is unsigned only in ISO C90
	...

Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Reported-by: Geert Uytterhoeven <geert@linux-m68k.org>
Acked-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

Author: Alexey Dobriyan

lib/test-kstrtox.c

@@ -315,12 +315,12 @@ static void __init test_kstrtou64_ok(void)
 		{"65537",	10,	65537},
 		{"2147483646",	10,	2147483646},
 		{"2147483647",	10,	2147483647},
-		{"2147483648",	10,	2147483648},
-		{"2147483649",	10,	2147483649},
-		{"4294967294",	10,	4294967294},
-		{"4294967295",	10,	4294967295},
-		{"4294967296",	10,	4294967296},
-		{"4294967297",	10,	4294967297},
+		{"2147483648",	10,	2147483648ULL},
+		{"2147483649",	10,	2147483649ULL},
+		{"4294967294",	10,	4294967294ULL},
+		{"4294967295",	10,	4294967295ULL},
+		{"4294967296",	10,	4294967296ULL},
+		{"4294967297",	10,	4294967297ULL},
 		{"9223372036854775806",	10,	9223372036854775806ULL},
 		{"9223372036854775807",	10,	9223372036854775807ULL},
 		{"9223372036854775808",	10,	9223372036854775808ULL},
@@ -369,12 +369,12 @@ static void __init test_kstrtos64_ok(void)
 		{"65537",	10,	65537},
 		{"2147483646",	10,	2147483646},
 		{"2147483647",	10,	2147483647},
-		{"2147483648",	10,	2147483648},
-		{"2147483649",	10,	2147483649},
-		{"4294967294",	10,	4294967294},
-		{"4294967295",	10,	4294967295},
-		{"4294967296",	10,	4294967296},
-		{"4294967297",	10,	4294967297},
+		{"2147483648",	10,	2147483648LL},
+		{"2147483649",	10,	2147483649LL},
+		{"4294967294",	10,	4294967294LL},
+		{"4294967295",	10,	4294967295LL},
+		{"4294967296",	10,	4294967296LL},
+		{"4294967297",	10,	4294967297LL},
 		{"9223372036854775806",	10,	9223372036854775806LL},
 		{"9223372036854775807",	10,	9223372036854775807LL},
 	};
@@ -418,10 +418,10 @@ static void __init test_kstrtou32_ok(void)
 		{"65537",	10,	65537},
 		{"2147483646",	10,	2147483646},
 		{"2147483647",	10,	2147483647},
-		{"2147483648",	10,	2147483648},
-		{"2147483649",	10,	2147483649},
-		{"4294967294",	10,	4294967294},
-		{"4294967295",	10,	4294967295},
+		{"2147483648",	10,	2147483648U},
+		{"2147483649",	10,	2147483649U},
+		{"4294967294",	10,	4294967294U},
+		{"4294967295",	10,	4294967295U},
 	};
 	TEST_OK(kstrtou32, u32, "%u", test_u32_ok);
 }