Only enable HIP for Vega20 on non-ROCm platforms
Only enable HIP for Vega20 on non-ROCm platforms

SWDEV-245906

All asics will still be supported for developer builds.

Change-Id: I0eac2246162d133fe63449c200d996fe05bd51bd

ROCm-Developer-Tools/ROCclr,ROCm-Developer-Tools/ROCclr