corstone1000: enable PSCI reset

enable PSCI reset used for the system reset

Even though Corstone-1000 does not implement the entire PSCI APIs,
it relies on PSCI reset interface for the system reset.

Signed-off-by: Emekcan Aras <emekcan.aras@arm.com>
Signed-off-by: Abdellatif El Khlifi <abdellatif.elkhlifi@arm.com>
diff --git a/configs/corstone1000_defconfig b/configs/corstone1000_defconfig
index a5b794a..3cd6aa0 100644
--- a/configs/corstone1000_defconfig
+++ b/configs/corstone1000_defconfig
@@ -55,6 +55,7 @@
 CONFIG_RTC_EMULATION=y
 CONFIG_DM_SERIAL=y
 CONFIG_SYSRESET=y
+CONFIG_SYSRESET_PSCI=y
 CONFIG_TEE=y
 CONFIG_OPTEE=y
 CONFIG_USB=y