Fix: build failure of env-test

Since a365a04 the env-test deployment fails to build with the
following error:
  get_property could not find TARGET env_test.  Perhaps it has not yet
  been created.

The root cause is a spelling error in the CMakeLists.txt file of the
deployment. The error was most likely introduced by an incorrect
find-replace operation.

This change corrects the env-test deployment and makes it compile again.

Change-Id: I92ac7862d07f27956cda6f42e6413d7fbe7e3900
Signed-off-by: Gyorgy Szing Gyorgy.Szing@arm.com
diff --git a/deployments/env-test/opteesp/CMakeLists.txt b/deployments/env-test/opteesp/CMakeLists.txt
index 58f9c02..360d7d0 100644
--- a/deployments/env-test/opteesp/CMakeLists.txt
+++ b/deployments/env-test/opteesp/CMakeLists.txt
@@ -59,7 +59,7 @@
 #  Set target platform to provide drivers needed by the deployment
 #
 #-------------------------------------------------------------------------------
-add_platform(TARGET "env_test")
+add_platform(TARGET env-test)
 
 if(CMAKE_CROSSCOMPILING)
 	target_link_libraries(env-test PRIVATE stdc++ gcc m)