ARM: sunxi: Fix build break when CONFIG_USB_EHCI is not defined

BOOT_TARGET_DEVICES includes USB unconditionally. This breaks when
CONFIG_CMD_USB is not defined. Use a secondary macro to conditionally
include it when CONFIG_EHCI is enabled, as we do for CONFIG_AHCI.

Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Acked-by: Ian Campbell <ijc@hellion.org.uk>
1 file changed