clang-tidy: Fix readability-identifier-naming diagnostic

For example:

```
/usr/bin/clang-tidy -checks=-*, readability-identifier-naming -export-fixes /tmp/tmpsjbxtnss/tmpbj5pbywt.yaml -p=build /mnt/host/andrew/src/openbmc/libpldm/src/platform.c
/mnt/host/andrew/src/openbmc/libpldm/build/../include/libpldm/pdr.h:166:6: error: invalid case style for function 'pldm_pdr_update_TL_pdr' [readability-identifier-naming,-warnings-as-errors]
void pldm_pdr_update_TL_pdr(const pldm_pdr *repo, uint16_t terminusHandle,
     ^~~~~~~~~~~~~~~~~~~~~~
     pldm_pdr_update_tl_pdr
/mnt/host/andrew/src/openbmc/libpldm/build/../include/libpldm/pdr.h:166:60: error: invalid case style for parameter 'terminusHandle' [readability-identifier-naming,-warnings-as-errors]
void pldm_pdr_update_TL_pdr(const pldm_pdr *repo, uint16_t terminusHandle,
                                                           ^~~~~~~~~~~~~~
                                                           terminus_handle
/mnt/host/andrew/src/openbmc/libpldm/build/../include/libpldm/pdr.h:167:29: error: invalid case style for parameter 'tlEid' [readability-identifier-naming,-warnings-as-errors]
                            uint8_t tid, uint8_t tlEid, bool valid);
                                                 ^~~~~
                                                 tl_eid
```

Signed-off-by: Andrew Jeffery <andrew@aj.id.au>
Change-Id: I6419dade685ee656fe773451148f15aefb20becd
diff --git a/include/libpldm/pdr.h b/include/libpldm/pdr.h
index 09b376a..3c0d4dd 100644
--- a/include/libpldm/pdr.h
+++ b/include/libpldm/pdr.h
@@ -158,13 +158,14 @@
  * whether the valid bit is set or not as per the spec DSP0248
  *
  * @param[in] repo - opaque pointer acting as a PDR repo handle
- * @param[in] terminusHandle - PLDM terminus handle
+ * @param[in] terminus_handle - PLDM terminus handle
  * @param[in] tid - Terminus ID
  * @param[in] tlEid - MCTP endpoint EID
  * @param[in] valid - validity bit of TLPDR
  */
-void pldm_pdr_update_TL_pdr(const pldm_pdr *repo, uint16_t terminusHandle,
-			    uint8_t tid, uint8_t tlEid, bool valid);
+/* NOLINTNEXTLINE(readability-identifier-naming) */
+void pldm_pdr_update_TL_pdr(const pldm_pdr *repo, uint16_t terminus_handle,
+			    uint8_t tid, uint8_t tl_eid, bool valid);
 
 /* ======================= */
 /* FRU Record Set PDR APIs */