[Feature] add GA346 baseline version

Change-Id: Ic62933698569507dcf98240cdf5d9931ae34348f
diff --git a/src/kernel/linux/v4.19/arch/arm/mach-realview/hotplug.h b/src/kernel/linux/v4.19/arch/arm/mach-realview/hotplug.h
new file mode 100644
index 0000000..eacd7a4
--- /dev/null
+++ b/src/kernel/linux/v4.19/arch/arm/mach-realview/hotplug.h
@@ -0,0 +1 @@
+void realview_cpu_die(unsigned int cpu);