configs: am65x_hs_evm: Add Support for eMMC boot

Add configs to support RAW boot mode in eMMC.

Signed-off-by: Andreas Dannenberg <dannenberg@ti.com>
diff --git a/configs/am65x_hs_evm_r5_defconfig b/configs/am65x_hs_evm_r5_defconfig
index 642f005..9e01899 100644
--- a/configs/am65x_hs_evm_r5_defconfig
+++ b/configs/am65x_hs_evm_r5_defconfig
@@ -23,6 +23,8 @@
 CONFIG_SPL_STACK_R=y
 CONFIG_SPL_SEPARATE_BSS=y
 CONFIG_SPL_EARLY_BSS=y
+CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_USE_SECTOR=y
+CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_SECTOR=0x400
 CONFIG_SPL_I2C_SUPPORT=y
 CONFIG_SPL_DM_MAILBOX=y
 CONFIG_SPL_DM_RESET=y