configs: Migrate CONFIG_USB_STORAGE

In some cases we were missing CONFIG_USB=y so enable that when needed.

Reviewed-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Tom Rini <trini@konsulko.com>
diff --git a/configs/coreboot-x86_defconfig b/configs/coreboot-x86_defconfig
index b18d80d..378d75f 100644
--- a/configs/coreboot-x86_defconfig
+++ b/configs/coreboot-x86_defconfig
@@ -39,5 +39,6 @@
 CONFIG_TPM_TIS_LPC=y
 CONFIG_USB=y
 CONFIG_DM_USB=y
+CONFIG_USB_STORAGE=y
 CONFIG_USE_PRIVATE_LIBGCC=y
 CONFIG_TPM=y