Add MMCCAM-enabled kernel config for IMX6, reduce debug noice in MMCCAM kernels

[kibab]

Summary

CAM_DEBUG_TRACE results in way too much debug output than needed now. When debugging, it's always possible to turn on trace level using camcontrol.

[kibab]

1. Updating D12110: Add MMCCAM-enabled kernel config for IMX6 and arm64 #
2. Enter a brief description of the changes included in this update.
3. The first line is used as subject, next lines as comment. #
4. If you intended to create a new revision, use:
5. $ arc diff --create

Removed non-relevant files

[emaste]

sys/arm64/conf/GENERIC-UP-MMCCAM

2 ↗

(On Diff #32344)

This comment probably needs an update - i.e. it's not GENERIC.

22 ↗

(On Diff #32344)

This also ought to mention MMCCAM?

[kibab]

Removed arm64-related part

[imp]

sys/arm/conf/IMX6-MMCCAM

8 ↗

(On Diff #32353)

This likely should be marked NO UNIVERSE.

[kibab]

Removed device mmccam, added NO_UNIVERSE

[kibab]

Renamed kernel conf for amd64 and fixes whitespaces