SWDEV-368235 - Revert "Remove obsolete env variables"

This reverts commit dfa7790030.

Reason for revert: Deferred to a future release.

Change-Id: Ia66c37f0ab9734dee73c930d10d7469d5fd57254


[ROCm/clr commit: 5dc104b3ea]

projects/clr/rocclr/device/pal/paldevice.cpp

@@ -291,7 +291,7 @@ bool NullDevice::create(const char* palName, const amd::Isa& isa, Pal::GfxIpLeve
                                nullptr,
                                nullptr,
                                nullptr,
-                               nullptr};
+                               AMD_OCL_SC_LIB};
     // Initialize the compiler handle
     acl_error error;
     compiler_ = amd::Hsail::CompilerInit(&opts, &error);
@@ -1013,7 +1013,7 @@ bool Device::create(Pal::IDevice* device) {
                                nullptr,
                                nullptr,
                                nullptr,
-                               nullptr};
+                               AMD_OCL_SC_LIB};
     // Initialize the compiler handle
     acl_error error;
     compiler_ = amd::Hsail::CompilerInit(&opts, &error);