Switch to NEGEDGE interrupt

This should result in less interrupts. The original code I forked stated
NEGEDGE was causing issues. It does not in my tests.

Author: hberntsen

esphome/components/MhiAcCtrl/MHI-AC-Ctrl-core.cpp

@@ -639,9 +639,7 @@ InitError init(const Config& config) {
     io_conf.pin_bit_mask = (1ULL<<config.sclk_pin);
 io_conf.pull_down_en = GPIO_PULLDOWN_DISABLE;
     io_conf.pull_up_en = GPIO_PULLUP_ENABLE;                                     // required to prevent abort() caused by floating pin when daughtboard not connected
-    io_conf.intr_type = GPIO_INTR_LOW_LEVEL;                    // when this is set to NEGEDGE, DMA sometimes doesn't read the last 4 bytes
-                                                                // if not connected to AC (plugged in) when starting, it will crash - probably because it
-                                                                // immediately calls an interrupt
+    io_conf.intr_type = GPIO_INTR_NEGEDGE;
     gpio_config(&io_conf);
 
     gpio_install_isr_service(ESP_INTR_FLAG_DEFAULT);