Revert "disable SVM when AMD BLAS is not available"

This reverts commit d63a38e9bfad4081ec8107e8d38e03c03f6548d2.

Conflicts:
	modules/ocl/test/test_ml.cpp
ocl: svm: restore non BLAS version
Merge pull request #1745 from alalek:ocl_fix_svm_with_blas