r341475 - Fix arm_neon.h and arm_fp16.h generation for compiling with std=c89

[Joerg Sonnenberger via cfe-commits]

On Wed, Sep 05, 2018 at 02:56:21PM -0000, Diogo N. Sampaio via cfe-commits wrote:
> Author: dnsampaio
> Date: Wed Sep  5 07:56:21 2018
> New Revision: 341475
> 
> URL: http://llvm.org/viewvc/llvm-project?rev=341475&view=rev
> Log:
> Fix arm_neon.h and arm_fp16.h generation for compiling with std=c89

As I wrote on the differential, this is just wrong. __inline is *not* a
keyword.

Joerg