getrlimit03: adjust a bit of code to compatiable with mips32

Error info:
getrlimit03.c:104: FAIL: __NR_prlimit64(0) had rlim_cur =
ffffffffffffffff but __NR_getrlimit(0) had rlim_cur = 7fffffff

According to kernel code: [arch/mips/include/uapi/asm/resource.h]
RLIM_INFINITY is set to 0x7fffffffUL instead of ULONG_MAX on mips32.

 /*
 * SuS says limits have to be unsigned.
 * Which makes a ton more sense anyway,
 * but we keep the old value on MIPS32,
 * for compatibility:
 */
 #ifndef __mips64
 # define RLIM_INFINITY      0x7fffffffUL
 #endif

Adding conditional statement about mips to fix this.

Signed-off-by: Hongzhi.Song <hongzhi.song@windriver.com>
Signed-off-by: Jan Stancek <jstancek@redhat.com>

testcases/kernel/syscalls/getrlimit/getrlimit03.c

@@ -26,6 +26,7 @@
 
 #include "tst_test.h"
 #include "lapi/syscalls.h"
+#include "lapi/abisize.h"
 
 /**
  * Linux provides an "old" getrlimit syscall handler that uses signed long,
@@ -61,7 +62,12 @@ struct rlimit_ulong {
 	unsigned long rlim_cur;
 	unsigned long rlim_max;
 };
-const unsigned long RLIM_INFINITY_UL = ULONG_MAX;
+
+#if defined(__mips__) && defined(TST_ABI32)
+	const unsigned long RLIM_INFINITY_UL = 0x7fffffffUL;
+#else
+	const unsigned long RLIM_INFINITY_UL = ULONG_MAX;
+#endif
 
 static int getrlimit_ulong(int resource, struct rlimit_ulong *rlim)
 {