arm64: defconfig: Add Toradex Embedded Controller config

Enable config for Toradex SMARC Embedded Controller, this is required
for proper reset and power-off functionalities on Toradex SMARC iMX8M
Plus.

Reviewed-by: Peng Fan <peng.fan@nxp.com>
Signed-off-by: Francesco Dolcini <francesco.dolcini@toradex.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>

Author: dolcini

arch/arm64/configs/defconfig

@@ -678,6 +678,7 @@ CONFIG_GPIO_SL28CPLD=m
 CONFIG_GPIO_AGGREGATOR=m
 CONFIG_POWER_RESET_MSM=y
 CONFIG_POWER_RESET_QCOM_PON=m
+CONFIG_POWER_RESET_TORADEX_EC=m
 CONFIG_POWER_RESET_XGENE=y
 CONFIG_POWER_RESET_SYSCON=y
 CONFIG_POWER_RESET_SYSCON_POWEROFF=y