Add control-plane-agent and host-sp-comms to Grapefruit (#1898)

- Rename `gimlet_seq` to `cpu_seq` in Idol and API crates, and use it
  for both Gimlet and Grapefruit
  - Remove fan power control APIs, which are seemingly unused
- Update `grapefruit-seq-server` to do mock power control, like
  `mock-gimlet-seq-server`
- Rename the `gimlet` BSP in `control-plane-agent` to `cpu-sled`, and
  use it for both Gimlet and Cosmo
- Add `usart6` support to `host-sp-comms`, since that's what Grapefruit
  uses
- Add `host-sp-comms`, `control-plane-agent`, and
  `stm32h7-update-server` to `grapefruit/app.toml`
- Initial Grapefruit / Cosmo inventory support in `control-plane-agent`
  and `host-sp-comms`

Author: mkeeter

Cargo.lock

@@ -118,7 +118,7 @@ vcell = { version = "0.1.2", default-features = false }
 walkdir = { version = "2.0.0", default-features = false }
 zerocopy = { version = "0.6.1", default-features = false }
 zeroize = { version = "1.5.7", default-features = false, features = ["zeroize_derive"] }
-zip = { version = "0.6", default-features = false, features = ["bzip2"] }
+zip = { version = "0.6", default-features = false, features = ["bzip2", "deflate", "zstd"] }
 
 # Oxide forks and repos
 attest-data = { git = "https://github.com/oxidecomputer/dice-util", default-features = false, version = "0.4.0" }

Cargo.toml

@@ -234,7 +234,7 @@ priority = 7
 max-sizes = {flash = 65536, ram = 65536}
 stacksize = 5080
 start = true
-task-slots = ["sys", "gimlet_seq", "hf", "control_plane_agent", "net", "packrat", "i2c_driver", { spi_driver = "spi2_driver" }, "sprot"]
+task-slots = ["sys", { cpu_seq = "gimlet_seq" }, "hf", "control_plane_agent", "net", "packrat", "i2c_driver", { spi_driver = "spi2_driver" }, "sprot"]
 notifications = ["jefe-state-change", "usart-irq", "multitimer", "control-plane-agent"]
 
 [tasks.udpecho]
@@ -271,7 +271,7 @@ task-slots = [
     "update_server",
     "sys",
     "hf",
-    "gimlet_seq",
+    { cpu_seq = "gimlet_seq" },
     "validate",
     "sensor",
     "sprot",