[AC97] Import the AC97 driver sample

The source code is licensed under MIT license, taken from
"MSDN Code Gallery Microsoft Samples" repository
(https://github.com/microsoftarchive/msdn-code-gallery-microsoft)

The original license was MS-PL, but the driver was later relicensed
as MIT.

Adopted to ReactOS code base by Michael Stamper.

Co-authored-by: Michael Stamper <michaelstamper1@gmail.com>

drivers/wdm/audio/drivers/CMakeLists.txt

@@ -1,2 +1,3 @@
 
+add_subdirectory(ac97)
 add_subdirectory(CMIDriver)

drivers/wdm/audio/drivers/ac97/CMakeLists.txt

@@ -0,0 +1,30 @@
+
+list(APPEND SOURCE
+    adapter.cpp
+    common.cpp
+    mintopo.cpp
+    prophnd.cpp
+    miniport.cpp
+    stream.cpp
+    stream2.cpp
+    rtminiport.cpp
+    rtstream.cpp
+    wavepciminiport.cpp
+    wavepcistream.cpp
+    wavecyclicminiport.cpp
+    wavecyclicstream.cpp)
+
+add_library(ac97 MODULE
+    ${SOURCE}
+    ac97.rc)
+
+target_link_libraries(ac97 stdunk libcntpr uuid)
+set_module_type(ac97 wdmdriver)
+add_importlibs(ac97 portcls hal ntoskrnl)
+
+if(CMAKE_C_COMPILER_ID STREQUAL "GNU" OR CMAKE_C_COMPILER_ID STREQUAL "Clang")
+    target_compile_options(ac97 PRIVATE -Wno-write-strings -Wno-switch)
+endif()
+
+add_cd_file(TARGET ac97 DESTINATION reactos/system32/drivers FOR all)
+add_driver_inf(ac97 ac97.inf)