MFC r343583:

Remove unecessary "All rights reserved" from files under my or Panasas's
copyright.

When all member nations of the Buenos Aires Convention adopted the Berne
Convention, the phrase "All rights reserved" became unnecessary to assert
copyright. Remove it from files under my or Panasas's copyright. The files
related to jedec_dimm(4) also bear avg@'s copyright; he has approved this
change.

MFC r345611:

Teach jedec_dimm(4) to be more forgiving of non-fatal errors.

It looks like some DIMMs claim to have a TSOD, but actually don't. Some
claim they weren't able to change the SPD page, but they did. Neither of
those should be fatal errors.

MFC 331345:

jedec_dimm: Use correct string length when populating sc->slotid_str

Don't limit the copy to the size of the target string *pointer* (always
4 on 32-bit / 8 on 64-bit). Instead, just use strdup().

MFC r329843:

jedec_dimm(4): report asset info and temperatures for DDR3 and DDR4 DIMMs

A super-set of the functionality of jedec_ts(4). jedec_dimm(4) reports asset
information (Part Number, Serial Number) encoded in the "Serial Presence
Detect" (SPD) data on JEDEC DDR3 and DDR4 DIMMs. It also calculates and
reports the memory capacity of the DIMM, in megabytes. If the DIMM includes
a "Thermal Sensor On DIMM" (TSOD), the temperature is also reported.

jedec_dimm(4): report asset info and temperatures for DDR3 and DDR4 DIMMs

A super-set of the functionality of jedec_ts(4). jedec_dimm(4) reports asset
information (Part Number, Serial Number) encoded in the "Serial Presence
Detect" (SPD) data on JEDEC DDR3 and DDR4 DIMMs. It also calculates and
reports the memory capacity of the DIMM, in megabytes. If the DIMM includes
a "Thermal Sensor On DIMM" (TSOD), the temperature is also reported.

Reviewed by: cem
MFC after: 1 week
Relnotes: yes
Sponsored by: Panasas
Differential Revision: https://reviews.freebsd.org/D14392
Discussed with: avg, cem
Tested by: avg, cem (previous version, no semantic changes)