axs10x: add support of generic EHCI USB 2.0 controller

This commit adds support of USB 2.0 storage media on AXS10x boards.

Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com>
Cc: Marek Vasut <marex@denx.de>
Cc: Simon Glass <sjg@chromium.org>
diff --git a/configs/axs101_defconfig b/configs/axs101_defconfig
index 52d5e2f..a541d9d 100644
--- a/configs/axs101_defconfig
+++ b/configs/axs101_defconfig
@@ -8,6 +8,7 @@
 CONFIG_SYS_PROMPT="AXS# "
 # CONFIG_CMD_IMLS is not set
 # CONFIG_CMD_FLASH is not set
+CONFIG_CMD_USB=y
 # CONFIG_CMD_SETEXPR is not set
 CONFIG_CMD_DHCP=y
 CONFIG_CMD_PING=y
@@ -19,4 +20,9 @@
 CONFIG_DM_ETH=y
 CONFIG_ETH_DESIGNWARE=y
 CONFIG_SYS_NS16550=y
+CONFIG_USB=y
+CONFIG_DM_USB=y
+CONFIG_USB_EHCI_HCD=y
+CONFIG_USB_EHCI_GENERIC=y
+CONFIG_USB_STORAGE=y
 CONFIG_USE_PRIVATE_LIBGCC=y