Rename function `formatFRU` to `formatIPMIFRU`

`FruDevice` can parse FRU content more than IPMI format.
Rename the function to a more specific name.

Signed-off-by: Michael Shen <gpgpgp@google.com>
Change-Id: If24f9cb0d51bb18c924b800fee595f52f85673dc
diff --git a/src/FruDevice.cpp b/src/FruDevice.cpp
index 3774a2d..dc7b77f 100644
--- a/src/FruDevice.cpp
+++ b/src/FruDevice.cpp
@@ -654,7 +654,7 @@
     std::shared_ptr<sdbusplus::asio::connection>& systemBus)
 {
     boost::container::flat_map<std::string, std::string> formattedFRU;
-    resCodes res = formatFRU(device, formattedFRU);
+    resCodes res = formatIPMIFRU(device, formattedFRU);
     if (res == resCodes::resErr)
     {
         std::cerr << "failed to parse FRU for device at bus " << bus
@@ -830,7 +830,7 @@
         return false;
     }
     // verify legal fru by running it through fru parsing logic
-    if (formatFRU(fru, tmp) != resCodes::resOK)
+    if (formatIPMIFRU(fru, tmp) != resCodes::resOK)
     {
         std::cerr << "Invalid fru format during writeFRU\n";
         return false;