Move function prototypes to headers

examples/xua_lite_example/src/pdm_mic.h

@@ -0,0 +1,10 @@
+#ifndef _PDM_MIC_H_
+#define _PDM_MIC_H_
+
+#include "mic_array.h"
+
+void mic_array_decimator_set_samprate(const unsigned samplerate, int mic_decimator_fir_data_array[], mic_array_decimator_conf_common_t *dcc, mic_array_decimator_config_t dc[]);
+void pdm_mic(streaming chanend c_ds_output, in buffered port:32 p_pdm_mics);
+void mic_array_setup_ddr_xcore(clock pdmclk, clock pdmclk6, out port p_pdm_clk, buffered in port:32 p_pdm_data, int divide);
+
+#endif