Restructure the folder

Move rocm_smi related function to rocm_smi folder. Move amd_smi to
top level include/ and src/ folder. Remove obsolte oam folder.
Change the CMakeLists.txt to update folder locations.

Change-Id: I52e6be739e49f3b0545865f25364787f5985e9c3

rocm_smi/docs/rocm_smi_doxygen.cfg

@@ -760,7 +760,7 @@ WARN_LOGFILE           =
 # Note: If this tag is empty the current directory is searched.
 
 INPUT                = @CMAKE_CURRENT_SOURCE_DIR@/../README.md \
-                     @CMAKE_CURRENT_SOURCE_DIR@/../include/rocm_smi/rocm_smi.h
+                     @CMAKE_CURRENT_SOURCE_DIR@/../rocm_smi/include/rocm_smi/rocm_smi.h
 
 # This tag can be used to specify the character encoding of the source files
 # that doxygen parses. Internally doxygen uses the UTF-8 encoding. Doxygen uses