snapper9260/snapper9g20: Disable USB

These boards have not converted to DM_USB by the deadline, disable USB
support as they do not enable CONFIG_OF_CONTROL.

Cc: Simon Glass <sjg@chromium.org>
Signed-off-by: NTom Rini <trini@konsulko.com>

configs/snapper9260_defconfig

@@ -21,7 +21,6 @@ CONFIG_CMD_GPIO=y
 CONFIG_CMD_I2C=y
 # CONFIG_CMD_LOADS is not set
 CONFIG_CMD_NAND=y
-CONFIG_CMD_USB=y
 # CONFIG_CMD_SOURCE is not set
 # CONFIG_CMD_SETEXPR is not set
 CONFIG_CMD_DHCP=y
@@ -40,5 +39,3 @@ CONFIG_MTD_RAW_NAND=y
 # CONFIG_SYS_NAND_USE_FLASH_BBT is not set
 CONFIG_NAND_ATMEL=y
 CONFIG_ATMEL_USART=y
-CONFIG_USB=y
-CONFIG_USB_STORAGE=y

configs/snapper9g20_defconfig

@@ -20,7 +20,6 @@ CONFIG_CMD_GPIO=y
 CONFIG_CMD_I2C=y
 # CONFIG_CMD_LOADS is not set
 CONFIG_CMD_NAND=y
-CONFIG_CMD_USB=y
 # CONFIG_CMD_SOURCE is not set
 # CONFIG_CMD_SETEXPR is not set
 CONFIG_CMD_DHCP=y
@@ -39,5 +38,3 @@ CONFIG_MTD_RAW_NAND=y
 # CONFIG_SYS_NAND_USE_FLASH_BBT is not set
 CONFIG_NAND_ATMEL=y
 CONFIG_ATMEL_USART=y
-CONFIG_USB=y
-CONFIG_USB_STORAGE=y