configs: stm32mp15: Enable USB relative flags

Enable config USB relative flags in order to enable USB
EHCI, DWC2 gadget, download and mass_storage support.

Signed-off-by: Patrice Chotard <patrice.chotard@st.com>

configs/stm32mp15_basic_defconfig

@@ -24,6 +24,8 @@ CONFIG_CMD_GPIO=y
 CONFIG_CMD_GPT=y
 CONFIG_CMD_I2C=y
 CONFIG_CMD_MMC=y
+CONFIG_CMD_USB=y
+CONFIG_CMD_USB_MASS_STORAGE=y
 CONFIG_CMD_PMIC=y
 CONFIG_CMD_REGULATOR=y
 CONFIG_CMD_EXT4_WRITE=y
@@ -36,6 +38,8 @@ CONFIG_LED=y
 CONFIG_LED_GPIO=y
 CONFIG_DM_MMC=y
 CONFIG_STM32_SDMMC2=y
+CONFIG_PHY=y
+CONFIG_PHY_STM32_USBPHYC=y
 # CONFIG_PINCTRL_FULL is not set
 # CONFIG_SPL_PINCTRL_FULL is not set
 CONFIG_DM_PMIC=y
@@ -47,3 +51,15 @@ CONFIG_DM_REGULATOR_STM32_VREFBUF=y
 CONFIG_DM_REGULATOR_STPMU1=y
 CONFIG_SERIAL_RX_BUFFER=y
 CONFIG_STM32_SERIAL=y
+CONFIG_USB=y
+CONFIG_DM_USB=y
+CONFIG_USB_EHCI_HCD=y
+CONFIG_USB_EHCI_GENERIC=y
+CONFIG_USB_DWC2=y
+CONFIG_USB_STORAGE=y
+CONFIG_USB_GADGET=y
+CONFIG_USB_GADGET_MANUFACTURER="STMicroelectronics"
+CONFIG_USB_GADGET_VENDOR_NUM=0x0483
+CONFIG_USB_GADGET_PRODUCT_NUM=0x5720
+CONFIG_USB_GADGET_DWC2_OTG=y
+CONFIG_USB_GADGET_DOWNLOAD=y