Avoid import error when hsa module is imported and libHLC is unavailable
Avoid import error when hsa module is imported and libHLC is unavailable

jriehl/numba,cpcloud/numba,GaZ3ll3/numba,gmarkall/numba,seibert/numba,IntelLabs/numba,ssarangi/numba,stefanseefeld/numba,jriehl/numba,gmarkall/numba,stefanseefeld/numba,pitrou/numba,pitrou/numba,IntelLabs/numba,stonebig/numba,jriehl/numba,sklam/numba,pombredanne/numba,IntelLabs/numba,stefanseefeld/numba,cpcloud/numba,seibert/numba,jriehl/numba,stonebig/numba,ssarangi/numba,stuartarchibald/numba,seibert/numba,sklam/numba,gmarkall/numba,stefanseefeld/numba,pitrou/numba,pitrou/numba,IntelLabs/numba,sklam/numba,stuartarchibald/numba,GaZ3ll3/numba,sklam/numba,seibert/numba,stuartarchibald/numba,ssarangi/numba,stefanseefeld/numba,gmarkall/numba,pombredanne/numba,pombredanne/numba,pombredanne/numba,stuartarchibald/numba,GaZ3ll3/numba,cpcloud/numba,numba/numba,stuartarchibald/numba,numba/numba,pombredanne/numba,cpcloud/numba,stonebig/numba,stonebig/numba,stonebig/numba,numba/numba,numba/numba,jriehl/numba,pitrou/numba,GaZ3ll3/numba,GaZ3ll3/numba,cpcloud/numba,numba/numba,IntelLabs/numba,gmarkall/numba,ssarangi/numba,seibert/numba,sklam/numba,ssarangi/numba