AVX2: adjust test for new AVX2, FMA, and BMI2 support
AVX2: adjust test for new AVX2, FMA, and BMI2 support

Refs: gh-11

Signed-off-by: Matthias Kretz <372ea4eca737a13cd010ee806d4ce7b98ee71550@kde.org>

VcDevel/Vc,VcDevel/Vc,VcDevel/Vc,VcDevel/Vc,chr-engwer/Vc,chr-engwer/Vc,chr-engwer/Vc