Merge branch 'bugfix/bootloader_efuse_build_regression' into 'master'

bootloader: add definition of esp_clk_apb_freq

Closes IDFGH-1734

See merge request espressif/esp-idf!5913

components/bootloader_support/src/bootloader_clock.c

@@ -58,3 +58,12 @@ void bootloader_clock_configure(void)
     }
 #endif
 }
+
+#ifdef BOOTLOADER_BUILD
+
+int esp_clk_apb_freq(void)
+{
+    return rtc_clk_apb_freq_get();
+}
+
+#endif // BOOTLOADER_BUILD