[PATCH] drm/i915: remove h from printk format specifier

[Chris Wilson]

Quoting trix at redhat.com (2020-12-15 14:41:01)
> From: Tom Rix <trix at redhat.com>
> 
> See Documentation/core-api/printk-formats.rst.
> h should no longer be used in the format specifier for printk.

It's understood by format_decode().
* 'h', 'l', or 'L' for integer fields

At least reference commit cbacb5ab0aa0 ("docs: printk-formats: Stop
encouraging use of unnecessary %h[xudi] and %hh[xudi]") as to why the
printk-formats.rst was altered so we know the code is merely in bad
taste and not using undefined behaviour of printk.
-Chris