usb: fastboot: Convert USB f_fastboot to shared fastboot

Convert USB fastboot code to use shared fastboot protocol.

Signed-off-by: Alex Kiernan <alex.kiernan@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
diff --git a/configs/A20-Olimex-SOM204-EVB_defconfig b/configs/A20-Olimex-SOM204-EVB_defconfig
index e56f2c7..cfb7ffa 100644
--- a/configs/A20-Olimex-SOM204-EVB_defconfig
+++ b/configs/A20-Olimex-SOM204-EVB_defconfig
@@ -17,6 +17,7 @@
 # CONFIG_SPL_DOS_PARTITION is not set
 # CONFIG_SPL_PARTITION_UUIDS is not set
 CONFIG_SCSI_AHCI=y
+CONFIG_FASTBOOT_CMD_OEM_FORMAT=y
 CONFIG_PHY_ADDR=3
 CONFIG_PHY_MICREL=y
 CONFIG_PHY_MICREL_KSZ90X1=y