fix(esp_eth): fixes EMAC MDC out of the range issue

Closes https://github.com/espressif/esp-idf/issues/17984

components/hal/esp32/include/hal/emac_ll.h

@@ -22,6 +22,7 @@
 #include "soc/emac_mac_struct.h"
 #include "soc/emac_ext_struct.h"
 #include "soc/dport_reg.h"
+#include "soc/clk_tree_defs.h"
 
 #ifdef __cplusplus
 extern "C" {
@@ -746,6 +747,12 @@ static inline void emac_ll_pause_frame_enable(emac_ext_dev_t *ext_regs, bool ena
 }
 /*************** End of ext regs operation *********************/
 
+static inline soc_module_clk_t emac_ll_get_csr_clk_src(void)
+{
+    // Source of the ESP32 EMAC CRS clock is APB clock.
+    return SOC_MOD_CLK_APB;
+}
+
 #ifdef __cplusplus
 }
 #endif