darp9: Add Darter Pro 9

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

models/darp9/edk2.config

@@ -0,0 +1,9 @@
+BOOTLOADER=COREBOOT
+DISABLE_SERIAL_TERMINAL=TRUE
+PLATFORM_BOOT_TIMEOUT=2
+PS2_KEYBOARD_ENABLE=TRUE
+SECURE_BOOT_ENABLE=TRUE
+SERIAL_DRIVER_ENABLE=FALSE
+SHELL_TYPE=NONE
+TPM_ENABLE=TRUE
+#SYSTEM76_EC_LOGGING=TRUE