defconfig: am57xx_hs_evm: enable i2c driver model

Enable i2c driver model for am57xx_hs_evm as omap i2c
supports driver model.

Signed-off-by: Mugunthan V N <mugunthanvnm@ti.com>
diff --git a/configs/am57xx_hs_evm_defconfig b/configs/am57xx_hs_evm_defconfig
index 01a4701..2ccb332 100644
--- a/configs/am57xx_hs_evm_defconfig
+++ b/configs/am57xx_hs_evm_defconfig
@@ -42,3 +42,4 @@
 CONFIG_SPL_LOAD_FIT=y
 CONFIG_SPL_FIT_IMAGE_POST_PROCESS=y
 CONFIG_OF_LIST="am57xx-beagle-x15"
+CONFIG_DM_I2C=y