arm64: layerscape: Support SYSRESET

CONFIG_SYSRESET provides its own implementation of reset_cpu. Disable
our version when it is enabled.

Signed-off-by: Sean Anderson <sean.anderson@seco.com>
Signed-off-by: Peng Fan <peng.fan@nxp.com>
diff --git a/arch/arm/cpu/armv8/fsl-layerscape/cpu.c b/arch/arm/cpu/armv8/fsl-layerscape/cpu.c
index c989a43..487c0ed 100644
--- a/arch/arm/cpu/armv8/fsl-layerscape/cpu.c
+++ b/arch/arm/cpu/armv8/fsl-layerscape/cpu.c
@@ -1229,6 +1229,7 @@
 	return 0;
 }
 
+#if !CONFIG_IS_ENABLED(SYSRESET)
 __efi_runtime_data u32 __iomem *rstcr = (u32 *)CONFIG_SYS_FSL_RST_ADDR;
 
 void __efi_runtime reset_cpu(void)
@@ -1248,6 +1249,7 @@
 	scfg_out32(rstcr, val);
 #endif
 }
+#endif
 
 #if defined(CONFIG_EFI_LOADER) && !defined(CONFIG_PSCI_RESET)