[Feature]Upload Modem source code

Change-Id: Id4294f30faced84d3e6fd6d5e61e1111bf287a37
diff --git a/mcu/interface/service/sst/dsp_public_eintc.h b/mcu/interface/service/sst/dsp_public_eintc.h
new file mode 100644
index 0000000..1cd430c
--- /dev/null
+++ b/mcu/interface/service/sst/dsp_public_eintc.h
@@ -0,0 +1,10 @@
+#ifndef DSP_PUBLIC_EINTC_H
+#define DSP_PUBLIC_EINTC_H
+
+#include "kal_public_api.h"
+
+extern void dsp_eintc_set_idle_signal(kal_uint32 thread);
+extern void dsp_eintc_clr_idle_signal(kal_uint32 thread);
+extern kal_uint32 dsp_eintc_idle_signal_status();
+
+#endif  /* DSP_PUBLIC_EINTC_H */
\ No newline at end of file