configs: j721e_evm_a72_defconfig: Enable the drivers required for the USB3 support

Enable the mmio mux driver, the J721E-wiz PHy driver and the cadence sierra
phy driver. All of them are required for USB3 support

Signed-off-by: Jean-Jacques Hiblot <jjhiblot@ti.com>
Signed-off-by: Vignesh Raghavendra <vigneshr@ti.com>
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
Signed-off-by: Lokesh Vutla <lokeshvutla@ti.com>
Link: https://lore.kernel.org/r/20210721155849.20994-16-kishon@ti.com

configs/j721e_evm_a72_defconfig

@@ -135,9 +135,15 @@ CONFIG_SPI_FLASH_STMICRO=y
 # CONFIG_SPI_FLASH_USE_4K_SECTORS is not set
 CONFIG_SPI_FLASH_MTD=y
 CONFIG_PHY_TI_DP83867=y
+CONFIG_MULTIPLEXER=y
+CONFIG_MUX_MMIO=y
 CONFIG_PHY_FIXED=y
 CONFIG_DM_ETH=y
 CONFIG_TI_AM65_CPSW_NUSS=y
+CONFIG_PHY=y
+CONFIG_SPL_PHY=y
+CONFIG_PHY_CADENCE_SIERRA=y
+CONFIG_PHY_J721E_WIZ=y
 CONFIG_PINCTRL=y
 # CONFIG_PINCTRL_GENERIC is not set
 CONFIG_SPL_PINCTRL=y