ARMv7: PSCI: ls102xa: add more PSCI v1.0 functions implemention

This patch implements PSCI functions for ls102xa SoC following PSCI v1.0,
they are as the list:
    psci_version,
    psci_features,
    psci_cpu_suspend,
    psci_affinity_info,
    psci_system_reset,
    psci_system_off.

Tested on LS1021aQDS, LS1021aTWR.

Signed-off-by: Wang Dongsheng <dongsheng.wang@nxp.com>
Signed-off-by: Hongbo Zhang <hongbo.zhang@nxp.com>
Reviewed-by: York Sun <york.sun@nxp.com>
diff --git a/include/configs/ls1021atwr.h b/include/configs/ls1021atwr.h
index c588fdd..5b6e0a5 100644
--- a/include/configs/ls1021atwr.h
+++ b/include/configs/ls1021atwr.h
@@ -10,6 +10,7 @@
 #define CONFIG_LS102XA
 
 #define CONFIG_ARMV7_PSCI
+#define CONFIG_ARMV7_PSCI_1_0
 #define CONFIG_ARMV7_PSCI_NR_CPUS	CONFIG_MAX_CPUS
 
 #define CONFIG_SYS_FSL_CLK