meta-ibm: introduce new huygens system

The huygens machine is based on the new pstbmc machine family from IBM.
It will be our first redundant BMC system [1].

The initial focus on this machine will

meta-ibm: introduce new huygens system

The huygens machine is based on the new pstbmc machine family from IBM.
It will be our first redundant BMC system [1].

The initial focus on this machine will be the redundant BMC feature.
The simulation model we use will just be 2 BMCs initially. Due to this
focus and simulation model, this commit strips out all of the host
firmware and host processor related features.

Tested:
- Confirmed in our 2 BMC simulation model that both BMCs come to Ready
and only the expected vpd services have failed
- Confirmed network into the BMCs worked as expected

[1]: https://gerrit.openbmc.org/c/openbmc/docs/+/70233

Change-Id: Ieb42337980c0ec39d16c492c77810473d5105aa0
Signed-off-by: Andrew Geissler <geissonator@yahoo.com>

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meta-ibm: only use openpower bbappend when including layer

There is a desire to add non-openpower systems to the meta-ibm layer. To
do that, need to ensure the bbappend files that are appending to
o

meta-ibm: only use openpower bbappend when including layer

There is a desire to add non-openpower systems to the meta-ibm layer. To
do that, need to ensure the bbappend files that are appending to
openpower recipes are only included if the machine being built includes
the meta-openpower layer.

Tested:
- Confirmed a system not including meta-openpower builds ok with this
- Confirmed p10bmc still uses the bbappend files

Signed-off-by: Andrew Geissler <geissonator@yahoo.com>
Change-Id: I32a08e9f20a20152d51c77cdfca6bbc15b5e93d4

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