Add _IOC_NEWLEN() and _IOC_NEWTYPE() macros.
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Authored by brooks on Mar 15 2018, 11:14 PM.

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kib
imp
cem

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rS331077: Add _IOC_NEWLEN() and _IOC_NEWTYPE() macros.

Summary

These macros take an existing ioctl(2) command and replace the length
with the specified length or length of the specified type respectively.
These can be used to define commands for 32-bit compatibility with fewer
opportunities for cut-and-paste errors then a whole new definition.