selftests/bpf: Rename ARG_PTR_TO_LONG test description

Given we got rid of ARG_PTR_TO_LONG, change the test case description to
avoid potential confusion:

  # ./vmtest.sh -- ./test_progs -t verifier_int_ptr
  [...]
  ./test_progs -t verifier_int_ptr
  [    1.610563] bpf_testmod: loading out-of-tree module taints kernel.
  [    1.611049] bpf_testmod: module verification failed: signature and/or required key missing - tainting kernel
  torvalds#489/1   verifier_int_ptr/arg pointer to long uninitialized:OK
  torvalds#489/2   verifier_int_ptr/arg pointer to long half-uninitialized:OK
  torvalds#489/3   verifier_int_ptr/arg pointer to long misaligned:OK
  torvalds#489/4   verifier_int_ptr/arg pointer to long size < sizeof(long):OK
  torvalds#489/5   verifier_int_ptr/arg pointer to long initialized:OK
  torvalds#489     verifier_int_ptr:OK
  Summary: 1/5 PASSED, 0 SKIPPED, 0 FAILED

Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>

tools/testing/selftests/bpf/progs/verifier_int_ptr.c

@@ -6,7 +6,7 @@
 #include "bpf_misc.h"
 
 SEC("socket")
-__description("ARG_PTR_TO_LONG uninitialized")
+__description("arg pointer to long uninitialized")
 __success
 __naked void arg_ptr_to_long_uninitialized(void)
 {
@@ -34,7 +34,7 @@ __naked void arg_ptr_to_long_uninitialized(void)
 }
 
 SEC("socket")
-__description("ARG_PTR_TO_LONG half-uninitialized")
+__description("arg pointer to long half-uninitialized")
 __success
 __retval(0)
 __naked void ptr_to_long_half_uninitialized(void)
@@ -64,7 +64,7 @@ __naked void ptr_to_long_half_uninitialized(void)
 }
 
 SEC("cgroup/sysctl")
-__description("ARG_PTR_TO_LONG misaligned")
+__description("arg pointer to long misaligned")
 __failure __msg("misaligned stack access off 0+-20+0 size 8")
 __naked void arg_ptr_to_long_misaligned(void)
 {
@@ -95,7 +95,7 @@ __naked void arg_ptr_to_long_misaligned(void)
 }
 
 SEC("cgroup/sysctl")
-__description("ARG_PTR_TO_LONG size < sizeof(long)")
+__description("arg pointer to long size < sizeof(long)")
 __failure __msg("invalid indirect access to stack R4 off=-4 size=8")
 __naked void to_long_size_sizeof_long(void)
 {
@@ -124,7 +124,7 @@ __naked void to_long_size_sizeof_long(void)
 }
 
 SEC("cgroup/sysctl")
-__description("ARG_PTR_TO_LONG initialized")
+__description("arg pointer to long initialized")
 __success
 __naked void arg_ptr_to_long_initialized(void)
 {