SWDEV-463865 - changed device,roc and pal namespaces to be nested under amd

Change-Id: Icad342843c039c634e249a13a7aa31400730b1dd


[ROCm/clr commit: 775dc204aa]

projects/clr/rocclr/device/rocm/rocsignal.cpp

@@ -22,7 +22,7 @@
 #include "utils/flags.hpp"
 #include "utils/debug.hpp"
 #include "rocsignal.hpp"
-namespace roc {
+namespace amd::roc {
 
 Signal::~Signal() {
   hsa_signal_destroy(signal_);