Kernel: Consistently use `device_t`

[dumbbell]

Summary

Several files use the internal name of struct device instead of device_t which is part of the public API. This patch changes all struct device * to device_t.

The remaining occurrences of struct device are those referring to the Linux or OpenBSD version of the structure, or the code is not built on FreeBSD and it's unclear what to do.

This patch was initially created by Kip Macy and is part of D6585. It was extracted and modified so it can be committed separately from the possible rename of FreeBSD's struct device.

FWIW, the following command was used to find all occurrences:

git grep -E 'struct +device[[:>:]]'

Test Plan

The patch survived a make universe UNIVERSE_TARGET=buildkernel and two MIPS buildkernels (XLP and XLR) because they do not have a GENERIC kernel to make make universe happy; the same problem exists for ARM but the patch doesn't touch anything ARM-specific.

[sbruno]

for Intel device drivers, this is fine.

[emaste]

Some minor comments, also we should send a note to upstreams for the sys/contrib changes.

sys/boot/kshim/bsd_kernel.h

357 ↗

(On Diff #19143)

This one seems to be a slightly different case, and should probably be handled separately.

sys/mips/nlm/dev/net/xlpge.c

178–179 ↗

(On Diff #19143)

whitespace issue

sys/mips/rmi/dev/nlge/if_nlge.c

143–144 ↗

(On Diff #19143)

whitespace

[dumbbell]

Address @emaste comments

• Do not touch sys/boot/kshim/bsd_kernel.h in this round.
• Remove useless whitespaces in sys/mips/nlm/dev/net/xlpge.c and sys/mips/rmi/dev/nlge/if_nlge.c.