mb/google/guybrush: Add initial APCB

This is the initial APCB generated for the guybrush platform.

SPDs:
0: lp4x-spd-4.hex
1: lp4x-spd-1.hex
2: lp4x-spd-9.hex All other GPIO Settings are unused.

The GPIOs to use for the SPD identifiers:
Bit 0: GPIO 109
Bit 1: GPIO 87
Bit 2: GPIO 75
Bit 3: GPIO 88

BUG=b:182510885
TEST=Build

Signed-off-by: Martin Roth <[email protected]>
Change-Id: I01e9caf18735bec3858c5727ae2a4c999f1a2e87

Author: martinlroth

mainboard/google/guybrush/APCB_CZN_D4.bin

@@ -0,0 +1,23 @@
+Files:
+        APCB_CZN_D4.bin - Data only - No license, ABI or Version #
+
+2021-03-11: Initial drop:
+- Add APCB_CZN_D4.bin
+    This is a data file that gives configuration data to AMD's ABL,
+    the PSP AGESA Bootloader.  As there is no code, there is no ABI,
+    license, or version number.
+
+    Specified contents describing memory initialization:
+    Memory is 2 channel, LPDDR4x
+
+    The GPIOs to use for the SPD identifiers:
+    Bit 0: GPIO 109
+    Bit 1: GPIO 87
+    Bit 2: GPIO 75
+    Bit 3: GPIO 88
+
+    SPDs from the guybrush platform:
+    lp4x-spd-4.hex  # ID = 0(0b0000)  Parts = MT53E1G32D2NP-046 WT:A
+    lp4x-spd-1.hex  # ID = 1(0b0001)  Parts = MT53E512M32D2NP-046 WT:F
+    lp4x-spd-9.hex  # ID = 2(0b0010)  Parts = NT6AP256T32AV-J1
+    All other GPIO IDs are unused.