configs: am62ax_evm_a53_defconfig: Enable SUPPORT_EMMC_BOOT

Enable SUPPORT_EMMC_BOOT to help support eMMC boot on am62ax
device.

Signed-off-by: Judith Mendez <jm@ti.com>
diff --git a/configs/am62ax_evm_a53_defconfig b/configs/am62ax_evm_a53_defconfig
index 5e80c68..ad448fe 100644
--- a/configs/am62ax_evm_a53_defconfig
+++ b/configs/am62ax_evm_a53_defconfig
@@ -69,6 +69,7 @@
 CONFIG_SYS_I2C_OMAP24XX=y
 CONFIG_DM_MAILBOX=y
 CONFIG_K3_SEC_PROXY=y
+CONFIG_SUPPORT_EMMC_BOOT=y
 CONFIG_MMC_IO_VOLTAGE=y
 CONFIG_SPL_MMC_IO_VOLTAGE=y
 CONFIG_MMC_UHS_SUPPORT=y