style: apply naming convention to ipmi_validate_fru_area

Apply openbmc style naming convention to ipmi_validate_fru_area as part
of a multi-step cleanup process.

Change-Id: I082189030441e57579d072501279ff698fe1b7e3
Signed-off-by: Patrick Venture <venture@google.com>
diff --git a/strgfnhandler.cpp b/strgfnhandler.cpp
index a7c4b42..a00fc73 100644
--- a/strgfnhandler.cpp
+++ b/strgfnhandler.cpp
@@ -101,7 +101,7 @@
     // We received some bytes. It may be full or partial. Send a valid
     // FRU file to the inventory controller on DBus for the correct number
     bool bmc_fru = false;
-    ipmi_validate_fru_area(reqptr->frunum, fru_file_name, bus_type, bmc_fru);
+    validateFRUArea(reqptr->frunum, fru_file_name, bus_type, bmc_fru);
 
     return rc;
 }