Update to DV-FailDriver-WDM (microsoft#823)

* Removed unsupported install section

- This change removes the unsupported install method from the .inf file.

* Updated readme with DevGen example

- Add section to readme to encourage the usage of DevGen.
- Added example of how to use DevGen when installing sample driver.

* Update readme

- updated README.md based on the given suggestions

* More updates to readme

- added link to SwDevice
- fixed missing back tick

tools/dv/samples/DV-FailDriver-WDM/README.md

@@ -25,6 +25,22 @@ The DV-FailDriver-WDM sample driver contains intentional code errors that are de
 
 See [Deploying a Driver to a Test Computer](https://docs.microsoft.com/windows-hardware/drivers/develop/deploying-a-driver-to-a-test-computer) for details on how to deploy the sample.
 
+#### New
+
+It is highly encouraged when testing a driver to use [DevGen](https://learn.microsoft.com/windows-hardware/drivers/devtest/devgen) to create a [SwDevice](https://learn.microsoft.com/windows/win32/api/_swdevice/).
+
+__DevGen Usage Example__
+
+1. From a terminal (running as admin) on test computer go to the WDK tools path and run `.\devgen /add /bus SWD /hardwareid root\defect_toastmon`. ***If WDK is not available on test computer, simply copy over `devgen.exe`***
+
+2. There is now a `Generic software device` available in the system. ***Use Device Manager as a simple means to inspect or from a terminal run `pnputil /enum-devices /deviceid "root\defect_toastmon"`.***
+
+3. Now that there is a device with the appropriate hardware ID, deploy/install driver sample accordingly.
+
+> Note: Use `.\devgen /remove "<Device instance path>"` to remove SW device (the path can be copied from output of `.\devgen /add` or from Device Manager).
+>
+> Device instance path example `"SWD\DEVGEN\{D0299946-2EC2-C146-B00B-E01144166F8B}"`
+
 ## Test the sample
 
 See [How to test a driver at runtime](https://docs.microsoft.com/windows-hardware/drivers/develop/how-to-test-a-driver-at-runtime-from-a-command-prompt) for details on how to run tests on the Toastmon driver.

tools/dv/samples/DV-FailDriver-WDM/driver/defect_toastmon.inf

@@ -58,9 +58,6 @@ StartType      = 1                  ; SERVICE_SYSTEM_START
 ErrorControl   = 1                  ; SERVICE_ERROR_NORMAL
 ServiceBinary  = %12%\defect_toastmon.sys                            
 
-[DeviceInstall32]
-AddDevice=ROOT\Samples\0001,,ToastMonbuggy
-
 [ToastMonBuggy]
 HardwareIds=root\defect_toastmon