coreboot: Rebase on 4.15

Rebase on upstream coreboot/coreboot@5622666396. The is slightly ahead
of the 4.15 tag, but includes all of our boards and most Intel SoC
changes we need.

We are now ~10 patches on top of upstream.

The following boards have been upstreamed:

- addw1
- addw2
- bonw14
- darp5
- darp6
- darp7
- galp2
- galp3-b
- galp3-c
- galp4
- galp5
- gaze14
- gaze15
- gaze16
- lemp10
- oryp5
- oryp6
- oryp7
- oryp8

The following drivers have been upstreamed:

- tas5825m

microcode:

- TGL-U boards have been updated to rev 0x9a from private repo
- TGL-H boards have been updated to rev 0x3c from private repo
- Remaining boards changed to use blobs from public repo

FSP:

- TGL changed to use A.0.51.31 from public repo

Signed-off-by: Tim Crawford <tcrawford@system76.com>

models/oryp6/coreboot.config

@@ -1,9 +1,7 @@
 CONFIG_VENDOR_SYSTEM76=y
 CONFIG_BOARD_SYSTEM76_ORYP6=y
 CONFIG_CCACHE=y
-CONFIG_CONSOLE_SERIAL=n
-CONFIG_CPU_MICROCODE_CBFS_EXTERNAL_BINS=y
-CONFIG_CPU_UCODE_BINARIES="$(FIRMWARE_OPEN_MODEL_DIR)/microcode.rom"
+CONFIG_CPU_MICROCODE_CBFS_DEFAULT_BINS=y
 CONFIG_HAVE_IFD_BIN=y
 CONFIG_HAVE_ME_BIN=y
 CONFIG_IFD_BIN_PATH="$(FIRMWARE_OPEN_MODEL_DIR)/fd.rom"
@@ -15,7 +13,6 @@ CONFIG_PCIEXP_HOTPLUG_PREFETCH_MEM=0x20000000
 CONFIG_POST_IO=n
 CONFIG_RUN_FSP_GOP=y
 CONFIG_SMMSTORE=y
-CONFIG_SUBSYSTEM_DEVICE_ID=0x50d3
-CONFIG_SUBSYSTEM_VENDOR_ID=0x1558
+CONFIG_USE_OPTION_TABLE=y
 CONFIG_VALIDATE_INTEL_DESCRIPTOR=y
 #CONFIG_CONSOLE_SYSTEM76_EC=y