arm: socfpga: soc64: Disable CONFIG_PSCI_RESET

Don't invoke 'SYSTEM_RESET' PSCI function because PSCI
function calls are not supported by u-boot running in EL3.

Signed-off-by: Chee Hong Ang <chee.hong.ang@intel.com>
Reviewed-by: Ley Foon Tan <ley.foon.tan@intel.com>
diff --git a/configs/socfpga_agilex_defconfig b/configs/socfpga_agilex_defconfig
index c4db1d0..03ed1f5 100644
--- a/configs/socfpga_agilex_defconfig
+++ b/configs/socfpga_agilex_defconfig
@@ -12,6 +12,7 @@
 CONFIG_IDENT_STRING="socfpga_agilex"
 CONFIG_SPL_FS_FAT=y
 CONFIG_DEFAULT_DEVICE_TREE="socfpga_agilex_socdk"
+# CONFIG_PSCI_RESET is not set
 CONFIG_BOOTDELAY=5
 CONFIG_USE_BOOTARGS=y
 CONFIG_BOOTARGS="earlycon"