Merging r354882:

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r354882 | atanasyan | 2019-02-26 06:45:17 -0800 (Tue, 26 Feb 2019) | 4 lines

[mips] Emit `.module softfloat` directive

This change fixes crash on an assertion in case of using
`soft float` ABI for mips32r6 target.
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llvm-svn: 358934