arm: socfpga: soc64: Override 'lowlevel_init' to support ATF

Override 'lowlevel_init' to make sure secondary CPUs trapped
in ATF instead of SPL. After ATF is initialized, it will signal
the secondary CPUs to jump from SPL to ATF waiting to be 'activated'
by Linux OS via PSCI call.

Signed-off-by: Chee Hong Ang <chee.hong.ang@intel.com>
diff --git a/arch/arm/mach-socfpga/Makefile b/arch/arm/mach-socfpga/Makefile
index 418f543..c63162a 100644
--- a/arch/arm/mach-socfpga/Makefile
+++ b/arch/arm/mach-socfpga/Makefile
@@ -29,6 +29,7 @@
 
 ifdef CONFIG_TARGET_SOCFPGA_STRATIX10
 obj-y	+= clock_manager_s10.o
+obj-y	+= lowlevel_init_soc64.o
 obj-y	+= mailbox_s10.o
 obj-y	+= misc_s10.o
 obj-y	+= mmu-arm64_s10.o
@@ -41,6 +42,7 @@
 
 ifdef CONFIG_TARGET_SOCFPGA_AGILEX
 obj-y	+= clock_manager_agilex.o
+obj-y	+= lowlevel_init_soc64.o
 obj-y	+= mailbox_s10.o
 obj-y	+= misc_s10.o
 obj-y	+= mmu-arm64_s10.o