defconfig: dra72_evm: enable timer driver model

Enable timer driver model for dra72_evm_defconfig as omap-timer
supports driver model.

Signed-off-by: Mugunthan V N <mugunthanvnm@ti.com>
Reviewed-by: Tom Rini <trini@konsulko.com>
diff --git a/configs/dra72_evm_defconfig b/configs/dra72_evm_defconfig
index b57ecca..32d1dc1 100644
--- a/configs/dra72_evm_defconfig
+++ b/configs/dra72_evm_defconfig
@@ -22,3 +22,5 @@
 CONFIG_TI_QSPI=y
 CONFIG_DM_SPI=y
 CONFIG_DM_SPI_FLASH=y
+CONFIG_TIMER=y
+CONFIG_OMAP_TIMER=y