SWDEV-354050 - Runtime support for HIP non hostcall printf

Relates to https://reviews.llvm.org/D150427,

Each printf call populates buffer with following data
1. Control DWord - contains info regarding stream, format string constness and size of data frame
   (see http://gerrit-git.amd.com/c/lightning/ec/device-libs/+/857722 for more info)
2. Hash of the format string (if constant) else the format string itself
3. Printf arguments (each aligned to 8 byte boundary)

Change-Id: I7e320deb343921b4b4cfaf08a2be2883e0bc1f65

rocclr/device/devhcmessages.cpp

@@ -133,7 +133,9 @@ void MessageHandler::discardMessage(Message* message) {
 }
 
 // Defined in devhcprintf.cpp
+namespace amd {
 void handlePrintf(uint64_t* output, const uint64_t* input, uint64_t len);
+} // namespace amd
 
 bool MessageHandler::handlePayload(uint32_t service, uint64_t* payload) {
   Message* message = nullptr;
@@ -166,7 +168,7 @@ bool MessageHandler::handlePayload(uint32_t service, uint64_t* payload) {
 
   switch (service) {
     case SERVICE_PRINTF:
-      handlePrintf(payload, message->data_.data(), message->data_.size());
+      amd::handlePrintf(payload, message->data_.data(), message->data_.size());
       break;
     default:
       ClPrint(amd::LOG_ERROR, amd::LOG_ALWAYS, "Hostcall: Messages not supported for service %d",