[ARM] Adjust the feature set for Exynos
[ARM] Adjust the feature set for Exynos

Fine tune the cost model for all Exynos processors.

git-svn-id: 0ff597fd157e6f4fc38580e8d64ab130330d2411@342585 91177308-0d34-0410-b5e6-96231b3b80d8

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