armv8: ls1012: Enable CONFIG_DM_USB in defconfigs

Enables driver model flag CONFIG_DM_USB for LS1012A platform
in defconfigs.

Signed-off-by: Tang Yuantian <yuantian.tang@nxp.com>
Reviewed-by: York Sun <york.sun@nxp.com>

configs/ls1012afrdm_qspi_defconfig

@@ -34,6 +34,7 @@ CONFIG_E1000=y
 CONFIG_SYS_NS16550=y
 CONFIG_DM_SPI=y
 CONFIG_USB=y
+CONFIG_DM_USB=y
 CONFIG_USB_XHCI_HCD=y
 CONFIG_USB_XHCI_DWC3=y
 CONFIG_USB_STORAGE=y

configs/ls1012aqds_qspi_defconfig

@@ -35,6 +35,7 @@ CONFIG_SYS_NS16550=y
 CONFIG_DM_SPI=y
 CONFIG_FSL_DSPI=y
 CONFIG_USB=y
+CONFIG_DM_USB=y
 CONFIG_USB_XHCI_HCD=y
 CONFIG_USB_XHCI_DWC3=y
 CONFIG_USB_STORAGE=y

configs/ls1012ardb_qspi_defconfig

@@ -35,6 +35,7 @@ CONFIG_SYS_NS16550=y
 CONFIG_DM_SPI=y
 CONFIG_FSL_DSPI=y
 CONFIG_USB=y
+CONFIG_DM_USB=y
 CONFIG_USB_XHCI_HCD=y
 CONFIG_USB_XHCI_DWC3=y
 CONFIG_USB_STORAGE=y